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{{Short description|American military helicopter}}
{{Use dmy dates|date=November 2021}}
{{Use American English|date=November 2021}}
{{Redirect|MH-53|the MH-53E Sea Dragon minesweeper variant|Sikorsky CH-53E Super Stallion}}
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{|{{Infobox Aircraft Begin
{{Infobox aircraft
|name= HH-53 "Super Jolly Green Giant" <br/>MH-53 Pave Low
|name= HH-53 "Super Jolly Green Giant" <br/>MH-53 Pave Low
|image=Image:CH-53 CM2.jpg
|image= File:MH-53J Pave Low Mission Descent (altered).jpg
|caption= A MH-53 Pave Low from the 20th Special Operations Squadron at [[Hurlburt Field]], Florida
|caption=MH-53M In Iraq, Summer 2004
|type= Heavy-lift [[helicopter]]
}}{{Infobox Aircraft Type
|type=Heavy-lift [[helicopter]]
|manufacturer= [[Sikorsky Aircraft]]
|manufacturer= [[Sikorsky Aircraft]]
|designer=
|designer=
|first_flight= 15 March 1967
|first flight=
|introduction= 1968
|introduced=
|retired= 30 September 2008
|retired= 30 September 2008
|status=Retired
|status= Retired<ref name="MH-53_fly_final"/>
|primary user= [[United States Air Force]]
|primary_user= [[United States Air Force]]
|more users=
|more_users=
|produced= 1967&ndash;1970
|produced=<!--years in production, e.g. 1970-1999, if still in active use but no longer built-->
|number built=72 <ref name="ivory"/>
|number_built= 72<ref name="ivory"/>
|developed_from= [[Sikorsky CH-53 Sea Stallion]]
|unit cost= MH-53J: US$40 million (2001 dollars)
|variants =
|developed from = [[CH-53 Sea Stallion]]
|variants with their own articles =
}}
}}
|}


The '''Sikorsky HH-53 "Super Jolly Green Giant"''' is a version of the [[Sikorsky Aircraft|Sikorsky]] [[CH-53 Sea Stallion]] [[helicopter]] for long-range [[search and rescue|combat search and rescue]] (CSAR) helicopters. It was developed to replace the [[Sikorsky S-61R|HH-3 "Jolly Green Giant"]]. The HH-53s were later upgraded as '''MH-53 Pave Low''' series. The [[United States Air Force]]'s MH-53J/M fleet was retired in September 2008.<ref name="MH-53_fly_final">[http://www.af.mil/news/story.asp?id=123117644 "MH-53s fly final combat missions"], US Air Force, 1 October 2008.</ref>
The '''Sikorsky MH-53 Pave Low''' series is a retired long-range [[special operations]] and [[combat search and rescue]] (CSAR) [[helicopter]] for the [[United States Air Force]]. The series was upgraded from the HH-53B/C, variants of the [[Sikorsky CH-53 Sea Stallion]]. The '''HH-53 "Super Jolly Green Giant"''' was initially developed to replace the [[Sikorsky S-61R|HH-3E "Jolly Green Giant"]]. The U.S. Air Force's MH-53J/M fleet was retired in September 2008.<ref name="MH-53_fly_final">[https://www.af.mil/News/Article-Display/Article/122266/mh-53s-fly-final-combat-missions/ "MH-53s fly final combat missions"]. US Air Force, 1 October 2008.</ref>


==Design and development==
==Development==
[[File:HH-53C 67th ARRS approaching tanker 1987.JPEG|thumb|left|HH-53C refuels, 1987]]


The US Air Force ordered HH-53B and HH-53C variants for [[Search and Rescue]] units, and developed the MH-53J Pave Low version for Special Operations missions.
The US Air Force ordered 72 HH-53B and HH-53C variants for [[Search and Rescue]] units during the [[Vietnam War]], and later developed the MH-53J Pave Low version for Special Operations missions.


The Pave Low's mission is low-level, long-range, undetected penetration into denied areas, day or night, in adverse weather, for [[infiltration]], [[exfiltration]] and resupply of [[special operations force]]s. Pave Lows often work in conjunction with [[MC-130 Combat Talon|MC-130H Combat Talon]] for navigation, communications and combat support,<ref>[http://www.af.mil/factsheets/factsheet.asp?fsID=115 MC-130E/H Combat Talon I/II Fact Sheet], US Air Force.</ref> and with [[C-130 Hercules|MC-130P Combat Shadow]] for inflight refueling.<ref>[http://www.af.mil/factsheets/factsheet.asp?fsID=116 MC-130P Combat Shadow Fact Sheet], US Air Force.</ref><ref>[http://www.globalsecurity.org/military/systems/aircraft/mh-53j.htm MH-53J page], Globalsecurity.org</ref>
The Pave Low's mission was low-level, long-range, undetected penetration into denied areas, day or night, in adverse weather, for [[infiltration tactics|infiltration]], [[Extraction (military)|exfiltration]] and resupply of [[special operations force]]s. Pave Lows often worked in conjunction with [[MC-130 Combat Talon|MC-130H Combat Talon]] for navigation, communications and combat support,<ref>[https://web.archive.org/web/20030623172743/http://www.af.mil/factsheets/factsheet.asp?fsID=115 MC-130E/H Combat Talon I/II Fact Sheet], US Air Force.</ref> and with [[Lockheed MC-130#MC-130P Combat Shadow|MC-130P Combat Shadow]] for in-flight refueling.<ref>[https://web.archive.org/web/20030623172658/http://www.af.mil/factsheets/factsheet.asp?fsID=116 MC-130P Combat Shadow Fact Sheet], US Air Force.</ref><ref>[http://www.globalsecurity.org/military/systems/aircraft/mh-53j.htm MH-53J page]. Globalsecurity.org</ref>


Although officially known as the Stallion, the large green airframe of the HH-53B earned it the nickname "[[Jolly Green Giant#Pop Culture|Super Jolly Green Giant]]." This name is a reference to the smaller [[Sikorsky S-61R|HH-3E "Jolly Green Giant"]], a stretched variant of the [[H-3 Sea King]], used in the [[Vietnam War]] for combat search-and-rescue (CSAR) operations.
The large green airframe of the HH-53B earned it the nickname "[[Jolly Green Giant#Pop Culture|Super Jolly Green Giant]]". This name is a reference to the smaller [[Sikorsky S-61R|HH-3E "Jolly Green Giant"]], a stretched variant of the [[H-3 Sea King]], used in the [[Vietnam War]] for combat search-and-rescue (CSAR) operations.


===HH-53B===
===HH-53B===
The US Air Force regarded their Sikorsky S-61R/HH-3E "Jolly Green Giant" long-range CSAR helicopters favorably and was interested in the more capable S-65/CH-53A. In 1966, the USAF awarded a contract to Sikorsky for development of a CSAR variant of the CH-53A.<ref name="Vectorsite">{{cite web|url=http://www1.vectorsite.net/?subid4=1549697551.0489064894&kw=online+colleges&KW1=learn%20online&KW2=buy%20vector%20images&searchbox=0&domainname=0&backfill=0|title=vectorsite.net|website=www1.vectorsite.net|access-date=9 February 2019}}</ref>
[[Image:Sideview of an HH-53 helicopter, 1972.jpg|right|thumb|left|A HH-53 of the 40th Aerospace Rescue and Recovery Squadron seen from the gunner's position of a helicopter of the 21st Special Operations Squadron in Vietnam, October 1972.]]

The US Air Force liked their Sikorsky S-61R/HH-3E "Jolly Green Giant" long-range combat search and rescue (CSAR) helicopters very much, and so were very interested in the more capable S-65. In 1966, the USAF awarded a contract to Sikorsky for development of a minimum-change CSAR variant of the CH-53A.<ref name="Vectorsite">[http://www.vectorsite.net/avskbig.html Greg Goebel's Vectorsite]</ref>


[[File:HC-130P refueling HH-53B over North Vietnam.jpg|right|thumb|A HH-53B of the [[40th Aerospace Rescue and Recovery Squadron]] refueling from a [[HC-130P Hercules]] over [[North Vietnam]], 1969–70]]
The '''HH-53B''', as it was designated, featured:
The '''HH-53B''', as it was designated, featured:
* A retractable inflight refueling probe on the right side of the nose.
* A retractable in-flight refueling probe on the right side of the nose
* Spindle-shaped jettisonable external tanks with a capacity of {{convert|650|USgal|L|0}}, fitted to the [[sponsons]] and braced by struts attached to the fuselage.
* Spindle-shaped jettisonable external tanks with a capacity of {{convert|650|USgal|L|0}}, fitted to the [[sponsons]] and braced by struts attached to the fuselage
* A rescue hoist above the right passenger door, capable of deploying a [[jungle penetrator]] on {{convert|250|ft|m|0}} of steel cable.
* A rescue hoist above the right passenger door, capable of deploying a [[forest penetrator]] on {{convert|250|ft|m|sigfig=2}} of steel cable
* Armament of three pintle-mounted General Electric [[Minigun|GAU-2]]/A 7.62 millimeter (.308 in) six-barreled [[Gatling]]-type machine guns, with one in a forward hatch on each side of the fuselage and one mounted on the tail ramp, with the gunner secured with a harness.
* Armament of three pintle-mounted General Electric [[Minigun|GAU-2]]/A 7.62&nbsp;mm (.308 in) six-barreled [[Gatling]]-type machine guns, with one in a forward hatch on each side of the fuselage and one mounted on the tail ramp, with the gunner secured with a harness
* A total of {{convert|1200|lb|kg|0}} of armor.
* A total of {{convert|1200|lb|kg|sigfig=2}} of armor
* A Doppler navigation radar in the forward belly.
* A Doppler navigation radar in the forward belly
* Early HH-53Bs featured T64-GE-3 turboshafts with {{convert|3080|SHP|kW|0}}, but these engines were later upgraded to T64-GE-7 turboshafts with {{convert|3925|shp|kW|0}}. Five crew were standard, including a pilot, copilot, crew chief, and two [[United States Air Force Pararescue|pararescuemen]].<ref name="Vectorsite"/>


Early HH-53Bs featured T64-GE-3 turboshafts with {{convert|3080|shp|kW|0}} each, but these engines were later upgraded to T64-GE-7 turboshafts with {{convert|3925|shp|kW|0}}. Five crew were standard, including a pilot, copilot, crew chief, and two [[United States Air Force Pararescue|pararescuemen]].<ref name="Vectorsite"/>
While waiting for delivery of the HH-53Bs, the Air Force obtained two [[United States Marine Corps|Marine]] CH-53As for evaluation and training. The first of eight HH-53Bs performed its initial flight on 15 March 1967, and the type was performing CSAR missions with the USAF Aerospace Rescue & Recovery Service in Southeast Asia by the end of the year. The Air Force called the HH-53B the "Super Jolly". It was used for CSAR, covert combat operations, and "snagging" reentry capsules from [[KH-8|photo]]-[[reconnaissance satellite]]s.<ref name="Vectorsite"/>


===HH-53C===
===HH-53C===
[[File:HH-53C lowers pararescueman June 1970.jpg|thumb|left|An HH-53C lowering a [[United States Air Force Pararescue|PJ]] during a rescue mission, June 1970]]


The HH-53B was essentially an interim type, with production quickly moving on to the modestly-improved Air Force '''HH-53C''' CSAR variant. The most visible difference between the HH-53B and HH-53C was that the HH-53C dispensed with the fuel-tank bracing struts. Experience with the HH-53B showed that the original tank was too big, adversely affecting performance when they were fully fueled, and so a smaller {{convert|450|USgal|L|0|abbr=on}} tank was adopted in its place. Other changes included more armor and a more comprehensive suite of radios to improve communications with C-130 tankers, attack aircraft supporting CSAR actions, and aircrews awaiting rescue on the ground. The HH-53C was otherwise much like the HH-53B, with the more powerful T64-GE-7 engines.<ref name="Vectorsite"/>
The HH-53B was essentially an interim type, with production quickly moving on to the modestly improved Air Force '''HH-53C''' CSAR variant. The most visible difference between the HH-53B and HH-53C was that the HH-53C dispensed with the fuel-tank bracing struts. Experience with the HH-53B showed that the original tank was too big, adversely affecting performance when they were fully fueled, and so a smaller {{convert|450|USgal|L|0|abbr=on}} tank was adopted in its place. Other changes included more armor and a more comprehensive suite of radios to improve communications with C-130 tankers, attack aircraft supporting CSAR actions, and aircrews awaiting rescue on the ground. The HH-53C was otherwise much like the HH-53B, with the more powerful T64-GE-7 engines.<ref name="Vectorsite"/>

A total of 44 HH-53Cs was built, with introduction to service in August 1968. Late in the war they were fitted with countermeasures pods to deal with heat-seeking missiles. As with the HH-53B, the HH-53C was also used for covert operations and snagging reentry capsules, as well as snagging reconnaissance drones. A few were assigned to support the Apollo space program, standing by to recover an [[Apollo program|Apollo]] [[Apollo Command/Service Module|capsule]] in case of a launchpad abort, though such an accident never happened.<ref name="Vectorsite"/>

In addition to the HH-53Cs, the Air Force obtained 20 '''CH-53C''' machines for more general transport work. The CH-53C was apparently very similar to the HH-53C, even retaining the rescue hoist, the most visible difference being that the CH-53C did not have an inflight refueling probe. Since CH-53Cs were used for covert operations, they were no doubt armed and armored, just like HH-53Cs.<ref name="Vectorsite"/>


[[File:HH-53C over Vietnam October 1972.jpg|thumb|A HH-53 seen from the gunner's position of a helicopter over Vietnam in October 1972]]
The Super Jollies made headlines in November 1970 in the unsuccessful [[Operation Ivory Coast|raid into North Vietnam to rescue prisoners-of-war]] from the [[Son Tay]] prison camp, as well as in the operation to rescue the crew of the freighter [[SS Mayagüez|SS ''Mayagüez'']] from [[Cambodia]]n [[Khmer Rouge]] fighters in May 1975. The Air Force lost 17 Super Jollies in the conflict, with 14 lost in combat – including one that was shot down by a North Vietnamese [[Mikoyan-Gurevich MiG-21|MiG-21]] on 28 January 1970 while on a CSAR mission over [[Laos]] – and three lost in accidents.<ref name="Vectorsite"/>
A total of 44 HH-53Cs were built, with introduction to service in August 1968. Late in the Vietnam War they were fitted with countermeasures pods to deal with heat-seeking missiles. As with the HH-53B, the HH-53C was also used for covert operations and snagging reentry capsules, as well as snagging reconnaissance drones. A few were assigned to support the Apollo space program, standing by to recover an [[Apollo program|Apollo]] [[Apollo Command/Service Module|capsule]] in case of a launchpad abort, though such an accident never happened.<ref name="Vectorsite"/>


The HH-53B, HH-53C, and CH-53C remained in Air Force service into the late 1980s. Super Jollies operating in front-line service were painted in various camouflage color schemes, while those in stateside rescue service were painted in a natty overall gray scheme with a yellow tailband. A good number of Super Jollies were converted into ''Pave Low'' special-operations machines, the subject of the next section.<ref name="Vectorsite"/> [[PAVE]] or ''Pave'' is a [[USAF]] code name for a number of weapons systems using advanced electronics.
In addition to the HH-53Cs, the Air Force obtained 20 '''CH-53C''' helicopters for more general transport work. The CH-53C was apparently very similar to the HH-53C, even retaining the rescue hoist, the most visible difference being that the CH-53C did not have an in-flight refueling probe. Since CH-53Cs were used for covert operations, they were armed and armored like HH-53Cs.<ref name="Vectorsite"/> A good number of Super Jollies were converted into ''Pave Low'' special-operations helicopters.<ref name="Vectorsite"/> [[PAVE]] or ''Pave'' is an Air Force code name for a number of weapons systems using advanced electronics.


===HH/MH-53H===
===HH/MH-53H===
[[File:An air-to-air overhead front view of an MH-53H Pave Low III helicopter - DPLA - 90fe572cad2615b68fdf3bfe365c271b.jpeg|left|thumb|MH-53H Pave Low III]]
[[File:53 lifts a 53.jpg|thumb|right|A CH-53 lifts the body of a damaged [[MH-53]]]]
[[File:A left front view of a 20th Special Operations Squadron MH-53H PAVELOW helicopter extracting 1723rd Combat Control members with ladder ropes - DPLA - 749e173c49454bfa29149823ae0d4013.jpeg|thumb|right|MH-53H Pave Low on an extraction exercise, 1988]]
The USAF's Super Jollies were essentially daylight / fair weather machines, and downed aircrew were often in trouble at night or in bad weather. A limited night / foul weather sensor system designated "Pave Low I" based on a low-light-level TV (LLLTV) imager was deployed to Southeast Asia in 1969 and combat-evaluated on a Super Jolly, but reliability was not adequate.<ref name="Vectorsite"/>


In 1975, an HH-53B was fitted with the much improved "Pave Low II" system and re-designated YHH-53H. This exercise proved much more satisfactory, and so eight HH-53Cs were given a further improved systems fit and redesignated ''HH-53H Pave Low III'', with the YHH-53H also upgraded to this specification. All were delivered in 1979 and 1980.<ref name="Vectorsite"/>
The USAF's Super Jollies were useful helicopters, but they were essentially daylight / fair weather machines, and downed aircrew were often in trouble at night or in bad weather. A limited night / foul weather sensor system designated "Pave Low I" based on a low-light-level TV (LLLTV) imager was deployed to Southeast Asia in 1969 and combat-evaluated on a Super Jolly, but reliability was not adequate.<ref name="Vectorsite"/>


The HH-53H retained the in-flight refueling probe, external fuel tanks, rescue hoist, and three-gun armament of the HH-53C; armament was typically a [[minigun]] on each side, and a Browning {{convert|.50|in|mm|1|abbr=on}} gun in the tail to provide more reach and a light anti-armor capability. The improvements featured by the HH-53H included:
In 1975, an HH-53B was fitted with the much improved "Pave Low II" system and re-designated YHH-53H. This exercise proved much more satisfactory, and so eight HH-53Cs were given a further improved systems fit and redesignated ''HH-53H Pave Low III'', with the YHH-53H also upgraded to this specification. All were delivered in 1979 and 1980. Two of the HH-53Hs were lost in training accidents in 1984, and so two CH-53Cs were brought up to HH-53H standard as replacements.<ref name="Vectorsite"/>

The HH-53H retained the inflight refueling probe, external fuel tanks, rescue hoist, and three-gun armament of the HH-53C; armament was typically a [[minigun]] on each side, and a Browning .50cal (12.7mm) gun in the tail to provide more reach and a light anti-armor capability. The improvements featured by the HH-53H included:
* A [[Texas Instruments]] AN/AAQ-10 forward-looking infrared (FLIR) imager.
* A [[Texas Instruments]] AN/AAQ-10 forward-looking infrared (FLIR) imager.
* A Texas Instruments AN/APQ-158 terrain-following radar (TFR).
* A Texas Instruments AN/APQ-158 terrain-following radar (TFR), which was a digitized version of the radar used by the A-7. It was further modified to be able to give terrain avoidance and terrain following commands simultaneously (first aircraft capable of this unique feature).{{Citation needed|date=March 2010}}
* A Canadian Marconi Doppler-radar navigation system.
* A Canadian Marconi Doppler-radar navigation system.
* A Litton or Honeywell inertial guidance system (INS).
* A Litton or Honeywell inertial guidance system (INS).
Line 76: Line 74:


The FLIR and TFR were mounted on a distinctive "chin" mount. The HH-53H could be fitted with 27 seats for troops or 14 litters. The upgrades were performed by the Navy in Pensacola, reflecting the fact that the Navy handled high-level maintenance on Air Force S-65s. In 1986, the surviving HH-53Hs were given an upgrade under the ''CONSTANT GREEN'' program, featuring incremental improvements such as a cockpit with blue-green lighting compatible with [[night vision goggle]]s (NVGs). They were then reclassified as "special operations" machines and accordingly given a new designation of ''MH-53H''.<ref name="Vectorsite"/>
The FLIR and TFR were mounted on a distinctive "chin" mount. The HH-53H could be fitted with 27 seats for troops or 14 litters. The upgrades were performed by the Navy in Pensacola, reflecting the fact that the Navy handled high-level maintenance on Air Force S-65s. In 1986, the surviving HH-53Hs were given an upgrade under the ''CONSTANT GREEN'' program, featuring incremental improvements such as a cockpit with blue-green lighting compatible with [[night vision goggle]]s (NVGs). They were then reclassified as "special operations" machines and accordingly given a new designation of ''MH-53H''.<ref name="Vectorsite"/>
[[File:MH-53J Pave Low III.jpg|thumb|A MH-53J Pave Low IIIE of the [[551st Special Operations Squadron]], [[58th Special Operations Wing]], flying a training mission]]

The HH-53H proved itself and the Air Force decided to order more, coming up with an ''MH-53J Pave Low III Enhanced'' configuration. The general configuration of the MH-53J is similar to that of the HH-53J, the major change being fit of twin T64-GE-415 turboshafts with 4,380 shp (3,265 kW) each, as well as more armor, giving a total armor weight of 1,000 lb (450 kg). There were some avionics upgrades as well, including fit of a modern [[Global Positioning System]] (GPS) satellite navigation receiver. A total of 31 HH-53Bs, HH-53Cs, and CH-53Cs were upgraded to the MH-53J configuration from 1986 through 1990, with all MH-53Hs upgraded as well, providing a total of 41 MH-53Js.<ref name="Vectorsite"/>
The HH-53H proved itself and the Air Force decided to order more, coming up with an ''MH-53J Pave Low III Enhanced'' configuration. The general configuration of the MH-53J is similar to that of the HH-53J, the major change being fit of twin T64-GE-415 turboshafts with 4,380 shp (3,265&nbsp;kW) each, as well as more armor, giving a total armor weight of 1,000&nbsp;lb (450&nbsp;kg). There were some avionics upgrades as well, including fit of a modern [[Global Positioning System]] (GPS) satellite navigation receiver. A total of 31 HH-53Bs, HH-53Cs, and CH-53Cs were upgraded to the MH-53J configuration from 1986 through 1990, with all MH-53Hs upgraded as well, providing a total of 41 MH-53Js.<ref name="Vectorsite"/>


===MH-53J/M===
===MH-53J/M===
[[Image:MH-53J Pave Low III.jpg|thumb|An MH-53J Pave Low IIIE of the [[551st Special Operations Squadron]], [[58th Special Operations Wing]], flying a training mission.]]
[[File:An MH-53M Pave Low IV helicopter approaches the refueling basket of an MC-130P Combat Shadow.jpg|thumb|left|A MH-53M Pave Low IV of the [[21st Special Operations Squadron]] approaches the refueling basket of an [[Lockheed MC-130#MC-130P Combat Shadow|MC-130P Combat Shadow]] for in-flight refueling during the [[2000 Mozambique flood]].]]
[[Image:Refuelling.jpg|thumb|An MH-53 Pave Low from the 352d Special Operations Group, RAF Mildenhall, UK approaching a [[MC-130P]] during an aerial refuelling demo at [[RIAT]] 2004]]


The '''MH-53J Pave Low III''' heavy-lift helicopter is the largest, most powerful and technologically advanced transport helicopter in the [[united states air force|US Air Force]] inventory. The [[terrain-following radar|terrain-following]] and terrain-avoidance [[radar]], [[forward looking infrared]] sensor, [[inertial navigation]] system with Global Positioning System, along with a projected map display enable the crew to follow terrain contours and avoid obstacles, making low-level penetration possible.
The '''MH-53J Pave Low III''' helicopter was the largest, most powerful and technologically advanced transport helicopter in the [[united states air force|US Air Force]] inventory. The [[terrain-following radar|terrain-following]] and terrain-avoidance [[radar]], [[forward looking infrared]] sensor, [[inertial navigation]] system with Global Positioning System, along with a projected map display enable the crew to follow terrain contours and avoid obstacles, making low-level penetration possible.


Under the Pave Low III program, the Air Force modified nine MH-53Hs and 32 HH-53s for night and adverse weather operations. Modifications included forward-looking infrared, inertial navigation system, global positioning system, [[Doppler]] navigation systems, APQ-158 terrain-following and terrain-avoidance radar, an on-board mission computer, enhanced navigation system, and integrated avionics to enable precise [[navigation]] to and from target areas. The Air Force designated these modified versions as MH-53Js.
Under the Pave Low III program, the Air Force modified nine MH-53Hs and 32 HH-53s for night and adverse weather operations. Modifications included AN/AAQ-18 forward-looking infrared, inertial navigation system, global positioning system, [[Doppler radar|Doppler]] navigation systems, APQ-158 terrain-following and terrain-avoidance radar, an on-board mission computer, enhanced navigation system, and integrated avionics to enable precise [[navigation]] to and from target areas. The Air Force designated these modified versions as MH-53J.


The MH-53J's main mission is to drop off, supply, and pick up special forces who are behind enemy lines. It also can engage in combat search and rescue missions. Low-level penetration is made possible by a state-of-the-art terrain following radar, as well as infrared sensors that allow the helicopter to operate in bad weather.
The MH-53J's main mission was to drop off, supply, and pick up special operations forces behind enemy lines. It also can engage in combat search and rescue missions. Low-level penetration was made possible by a state-of-the-art terrain following radar, as well as infrared sensors that allow the helicopter to operate in bad weather. It was equipped with armor plating. It could transport 38 troops at a time and sling up to 20,000 pounds (9,000&nbsp;kg) of cargo with its external hook. It was capable of a top speed of 165&nbsp;mph (266&nbsp;km/h) and had a ceiling of 16,000 feet (4,900&nbsp;m).
[[File:Four MH-53 Pave Lows from 20th SOS fly over Hurlburt Field.jpg|thumb|Four MH-53M Pave Low IV, 2008]]
The '''MH-53M Pave Low IV''' was modified from the MH-53J configuration with the addition of Interactive Defensive Avionics System/Multi-Mission Advanced Tactical Terminal or IDAS/MATT. The system enhanced the defensive capabilities of the Pave Low. It provided instant access to the total battlefield situation, through near real-time Electronic Order of Battle updates. It also provided a new level of detection avoidance with [[near real-time]] threat broadcasts [[over-the-horizon]], so crews can avoid and defeat threats, and replan en route if necessary.


==Operational history==
This helicopter is equipped with armor plating. It can transport 38 troops at a time and sling up to 20,000 pounds (9,000&nbsp;kg) of cargo with its external hook. It reaches top speeds of 165 mph (266 km/h) and altitudes up to 16,000 feet (4,900&nbsp;m).
[[File:An MH-53 Pave Low helicopter.jpg|thumb|left|Special forces depart a MH-53 Pave Low]]
While waiting for delivery of the HH-53Bs, the Air Force obtained two [[United States Marine Corps|Marine]] CH-53As for evaluation and training. The first of eight HH-53Bs performed its initial flight on 15 March 1967, and the type was performing CSAR missions with the USAF Aerospace Rescue & Recovery Service in Southeast Asia by the end of the year. The Air Force called the HH-53B the "Super Jolly". It was used for CSAR, covert combat operations, and "snagging" reentry capsules from [[KH-8|photo]]-[[reconnaissance satellite]]s.<ref name="Vectorsite"/>


The Air Force lost 17 Super Jollies during the Southeast Asia conflict, with 14 lost in combat – including one that was shot down by a North Vietnamese [[Mikoyan-Gurevich MiG-21|MiG-21]] on 28 January 1970 while on a CSAR mission over [[Laos]] – and three lost in accidents.<ref name="Vectorsite"/> The Super Jollies made headlines in November 1970 in the unsuccessful [[Operation Ivory Coast|raid into North Vietnam to rescue prisoners-of-war]] from the [[Son Tay]] prison camp, as well as in the operation to rescue the crew of the freighter [[SS Mayagüez|SS ''Mayagüez'']] from [[Cambodia]]n [[Khmer Rouge]] fighters in May 1975.
The '''MH-53M Pave Low IV''' is a modified MH-53J with the Interactive Defensive Avionics System/Multi-Mission Advanced Tactical Terminal or IDAS/MATT. The system enhances present defensive capabilities of the Pave Low. It provides instant access to the total battlefield situation, through near real-time Electronic Order of Battle updates. It also provides a new level of detection avoidance with [[near real-time]] threat broadcasts [[over-the-horizon]], so crews can avoid and defeat threats, and replan enroute if needed.
[[File:A US Air Force (USAF) AIRMAN assigned to the 21st Special Operations Squadron (SOS) mans the tail gunner position aboard a USAF MH-53M Pave Low IV helicopter, during a training flig - DPLA - 0f89cbff8775c4ef60ce2549bd22f334.jpeg|thumb|View out of MH-53M Pave Low IV in 2002, with its ramp open]]
The HH-53B, HH-53C, and CH-53C remained in Air Force service into the late 1980s. Super Jollies operating in front-line service were painted in various camouflage color schemes, while those in stateside rescue service were painted in an overall gray scheme with a yellow tailband.<ref name="Vectorsite"/>


The first nine HH-53H Pave Lows became operational on 1 July 1980, and were transferred from the [[Military Airlift Command]], where they were to have been CSAR assets, to the [[1st Special Operations Wing]] in the aftermath of the ''[[Operation Eagle Claw]]'' disaster. Two of the HH-53Hs were lost in training accidents in 1984, and so two CH-53Cs were brought up to HH-53H standard as replacements.<ref name="Vectorsite"/>
The MH-53 Pave Low's last mission was on 27 September 2008, when the remaining six helicopters flew their last combat missions in support of special operations forces in Southwest Asia. These MH-53Ms were retired thereafter.<ref name="MH-53_fly_final"/>


Five MH-53Js of the [[20th Special Operations Squadron]] deployed to [[Panama]] as part of [[Operation Just Cause]] in December 1989. During the operation, MH-53Js conducted missions including reconnaissance, small team insertion, medivac, logistics, and fire support. The MH-53's terrain-following and terrain-avoidance radar, along with GPS, enabled the helicopters to reach objectives other helicopters could not; in one case, an MH-53 used its precision navigation capability to lead a SEAL team on [[MH-6 Little Bird]] helicopters to their remote objective. 20th SOS crews flew 193 sorties during the operation, totaling 406.1 hours of flying time.<ref>{{Cite book|url=http://www.afsoc.af.mil/Portals/86/documents/history/AFD-131112-025.pdf|title=On a Steel Horse I Ride: A History of the MH-53 Pave Low Helicopters in War and Peace|last=Whitcomb|first=Darrel D.|publisher=Air University Press|year=2012|isbn=978-1-58566-220-3|location=Montgomery, Alabama|pages=265–274}}</ref>
==Variants==
[[Image:MH53 night.jpg|thumb|right|MH-53 Pave Lows fly over Iraq on their last combat missions in September 2008, before their retirement.]]


The MH-53 Pave Low's last mission was on 27 September 2008, when the remaining six helicopters flew in support of special operations forces in Southwest Asia. These MH-53Ms were retired shortly thereafter and replaced with the [[V-22 Osprey]].<ref name="MH-53_fly_final"/><ref>Whitcomb, D.D. (2012). ''[https://purl.fdlp.gov/GPO/gpo32414 On a Steel Horse I Ride: A History of the MH-53 Pave Low Helicopters in War and Peace.]'' Maxwell Air Force Base, AL: Air University Press, Air Force Research Institute.</ref><ref>{{Cite web|url=https://www.military.com/defensetech/2008/10/08/bye-bye-pave-low-hello-osprey|title=Bye-Bye Pave Low, Hello Osprey|date=October 8, 2008|website=Military.com}}</ref>
* '''TH-53A''' - training version used by US Air Force (USAF)
* '''HH-53B''' - [[CH-53 Sea Stallion|CH-53A]] type for USAF search and rescue (SAR)
* '''CH-53C''' - heavy-lift version for USAF, 22 built
* '''HH-53C''' - "Super Jolly Green Giant", improved HH-53B for USAF
* '''S-65C-2 (S-65o) ''' - export version for Austria, later to Israel
* '''S-65-C3''' - export version for Israel
* '''YHH-53H''' - prototype Pave Low I aircraft
* '''HH-53H''' - Pave Low II night infiltrator
* '''MH-53H''' - redesignation of HH-53H
* '''MH-53J''' - "Pave Low III" special operations conversions of HH-53B, HH-53C, et al.
* '''MH-53M''' - "Pave Low IV" upgraded MH-53Js


==Variants and modification/upgrade programs==
For other variants, see [[CH-53 Sea Stallion]] and [[CH-53E Super Stallion]].
[[File:MH53 night.jpg|thumb|right|MH-53 Pave Lows fly over Iraq on their last combat missions in September 2008, before their retirement.]]
* '''TH-53A''' – training version used by US Air Force (USAF)
* '''HH-53B''' – [[CH-53 Sea Stallion|CH-53A]] type for USAF search and rescue (SAR). All helicopters modified with an experimental Limited Night Recovery System (LNRS).<ref>Project CHECO South East Asia Report - USAF Search and Rescue November 1967 to June 1969. HQ PACAF Directorate, Tactical Evaluation CHECO Division. July 30, 1969</ref> Some modified to Pave Imp LNRS-standard.<ref>On a Steel Horse I ride - A History of the MH-53 Pave Low Helicopters in War and Peace - Darrel D. Whitcomb - Air University Press. Air Force Research Institute. Maxwell Air Force Base, Alabama 2012</ref> One HH-53B serial number 66-14433 converted to Pave Low I Test Bed at Edwards Air Force Base in 1972.<ref>Pave Low - Evaluation of a Terrain Following Radar System for the HH-53 Helicopter. Technical Report No. 73-11 March 1973. Air Force Flight Test Center. Edwards Air Force Base, California, Air Force Systems Command, United States Air Force</ref> HH-53B 66-14433 consequently became the YHH-53H Black Knight.<ref>On a Steel Horse I ride - A History of the MH-53 Pave Low Helicopters in War and Peace - Darrel D. Whitcomb - Air University Press. Air Force Research Institute. Maxwell Air Force Base, Alabama 2012</ref>
* '''Pave Star''' - Program designed to address shortcomings of LNRS and deliver an improved night infiltration and rescue capability. Cancelled due to multiple technical issues and cost overruns<ref>On a Steel Horse I ride - A History of the MH-53 Pave Low Helicopters in War and Peace - Darrel D. Whitcomb - Air University Press. Air Force Research Institute. Maxwell Air Force Base, Alabama 2012</ref><ref>MH-53J/M Pave Low III/IV Systems Engineering Case Study by W. Albery Ph.D, Raymond L. Robb & Lt. Col. Lee Anderson (2010). Air Force Institute of Technology. Air Force Center for Systems Engineering</ref>
* '''Pave Imp''' - LNRS developed by USAF Air Force Systems Command. Replaced Pave Star. Some HH-53B and C's converted. Used in action during the Vietnam War<ref>On a Steel Horse I ride - A History of the MH-53 Pave Low Helicopters in War and Peace - Darrel D. Whitcomb - Air University Press. Air Force Research Institute. Maxwell Air Force Base, Alabama 2012</ref><ref>MH-53J/M Pave Low III/IV Systems Engineering Case Study by W. Albery Ph.D, Raymond L. Robb & Lt. Col. Lee Anderson (2010). Air Force Institute of Technology. Air Force Center for Systems Engineering</ref>
* '''CH-53C''' – heavy-lift version for USAF, 22 built
* '''HH-53C''' – "Super Jolly Green Giant", improved HH-53B for USAF. Some fitted with Pave Imp LNRS.<ref>MH-53J/M Pave Low III/IV Systems Engineering Case Study by W. Albery Ph.D, Raymond L. Robb & Lt. Col. Lee Anderson (2010). Air Force Institute of Technology. Air Force Center for Systems Engineering</ref>
* '''Pave Low I''' - Program built on lessons learned from Pave Star, Pave Imp and LNRS. A proof-of-concept test program with the objective of developing a true night and all-weather capability for the HH-53. The main difference from earlier programs centred around the evaluation of a modified Norden AN/APQ-141 Terrain Following/Terrain Avoidance radar along with associated instrumentation, and modifications to existing systems.<ref>Pave Low - Evaluation of a Terrain Following Radar System for the HH-53 Helicopter. Technical Report No. 73-11 March 1973. Air Force Flight Test Center. Edwards Air Force Base, California, Air Force Systems Command, United States Air Force</ref>
* '''Pave Low II''' - Program which aimed to address three distinct limitations identified in previous programs; the inability to avoid terrain and exposure to hostile radar/sensor-directed threats at low level; insufficient accuracy in the navigation system to reach the rescue area at low level; and inability to precisely locate the survivor(s) and hold a hover over his/her position.<ref>MH-53J/M Pave Low III/IV Systems Engineering Case Study by W. Albery Ph.D, Raymond L. Robb & Lt. Col. Lee Anderson (2010). Air Force Institute of Technology. Air Force Center for Systems Engineering</ref>
* '''Pave Low III''' - Follow-on program to Pave Low II, but with the LNRS-vintage Low Level Light Television (LLLTV) system replaced with the more capable AN/AAQ-10 Forward-looking Infrared (FLIR) sensor, along with the installation of the AN/APQ-158 Terrain Following/Terrain Avoidance Radar and an Inertial Navigation System. Other equipment additions included a central avionics computer and a projected map display system<ref>MH-53J/M Pave Low III/IV Systems Engineering Case Study by W. Albery Ph.D, Raymond L. Robb & Lt. Col. Lee Anderson (2010). Air Force Institute of Technology. Air Force Center for Systems Engineering</ref><ref>On a Steel Horse I ride - A History of the MH-53 Pave Low Helicopters in War and Peace - Darrel D. Whitcomb - Air University Press. Air Force Research Institute. Maxwell Air Force Base, Alabama 2012</ref>
[[File:70-1630 an 352 SOG 21 SOS MH-53M (3113878224).jpg|thumb|MH-53M in May 2007]]
* '''YHH-53H Black Knight''' – HH-53B 66-14433 Test Bed for Pave Low II and Pave Low III systems. Became Pave Low III prototype. Later brought up to Pave Low III production standard.<ref>MH-53J/M Pave Low III/IV Systems Engineering Case Study by W. Albery Ph.D, Raymond L. Robb & Lt. Col. Lee Anderson (2010). Air Force Institute of Technology. Air Force Center for Systems Engineering</ref>
* '''HH-53H''' – Production standard Pave Low III variant. Eight HH-53Cs, two CH-53Cs and the YHH-53H Black Knight were upgraded to this standard at the Naval Air Rework Facility in Naval Air Station (NAS) Pensacola, Florida.<ref>MH-53J/M Pave Low III/IV Systems Engineering Case Study by W. Albery Ph.D, Raymond L. Robb & Lt. Col. Lee Anderson (2010). Air Force Institute of Technology. Air Force Center for Systems Engineering</ref>
* '''MH-53H''' – Re-designation of HH-53H to highlight the additional role of Special Operations in conjunction with its original SAR role.
* '''MH-53J''' – "Pave Low IIIE (E for Enhanced)" Upgraded MH-53H. Improved variant with integrated digital avionics, an upgraded transmission, more powerful engines, and various enhanced mission and defensive systems. Remaining HH-53B and C-variants converted to this standard.
* '''MH-53M''' – "Pave Low IV" upgraded MH-53Js


For other H-53 variants, see [[CH-53 Sea Stallion]], [[CH-53E Super Stallion]] and [[CH-53K King Stallion]].
==Aircraft on display==


==Operator==
MH-53M Pave Low IV, AF Serial Number 68-10928, was retired 29 July 2007 and placed on display at Air Commando Park, [[Hurlburt Field]], Florida on 3 December 2007. This helicopter took part in the May 1975 [[Mayagüez incident]] rescue operation and sustained major battle damage to the engine, rotor blades, and instrument panel. The aircraft flew in combat in Afghanistan and Iraq for its last seven years of service, with its last combat mission in Iraq during the summer of 2007.<ref>http://www.hurlburt.af.mil/library/factsheets/factsheet.asp?id=10952</ref>
;{{USA}}
*[[United States Air Force]]<ref>{{cite web|url= http://www.helis.com/database/modelorg/489/|title= USAF|publisher= helis.com|access-date=5 January 2013}}</ref>


==Aircraft on display==
MH-53M Pave Low IV, AF Serial Number 68-10357, was retired in March 2008 and placed on display at the [[National Museum of the United States Air Force|National Museum of the US Air Force]] at [[Wright-Patterson AFB]], Ohio on 8 July 2008. This MH-53 carried the command element during [[Operation Ivory Coast]], the mission to rescue American prisoners of war from the [[Son Tay]] North Vietnamese prison camp in 1970.<ref name="ivory">Bardua, Rob. [http://www.nationalmuseum.af.mil/news/story.asp?id=123105770 "New MH-53M helicopter exhibit opens at the National Museum of the U.S. Air Force"], USAF National Museum, 8 July 2008.</ref>
[[File:MH-53 Pave Low IV Maxwell.jpg|thumb|An MH-53M on display at [[Maxwell Air Force Base|Maxwell AFB]]]]

[[File:16 19 181 MH 53.jpg|thumb|MH-53 displayed in a museum]]
MH-53M Pave Low IV, AF Serial Number 70-1626, was retired 11 August 2008 and will be placed on display at the [[Museum of Aviation]], [[Robins AFB]], in [[Warner Robins, Georgia]].<ref>Purser, Becky. [http://www.macon.com/197/story/429474.html "Celebrated combat search and rescue helicopter finds new home at Robins"].</ref>
*MH-53M Pave Low IV, AF serial number 68-10928, was retired 29 July 2007 and placed on display at Air Commando Park, [[Hurlburt Field]], Florida on 3 December 2007. This helicopter took part in the May 1975 [[Mayagüez incident]] rescue operation and sustained major battle damage to the engine, rotor blades, and instrument panel. The aircraft flew in combat during the [[War in Afghanistan (2001–2021)|War in Afghanistan]] and the [[Iraq War|War in Iraq]] for its last seven years of service, completing its last combat mission in Iraq during the summer 2007.<ref>Hurlburt Field, [http://www.hurlburt.af.mil/library/factsheets/factsheet.asp?id=10952 MH-53 Pave Low] {{webarchive|url=https://web.archive.org/web/20110728104919/http://www.hurlburt.af.mil/library/factsheets/factsheet.asp?id=10952 |date=2011-07-28 }}, Fact Sheet, retrieved 24 March 2012</ref>

*MH-53M Pave Low IV, AF serial number 68-10357, was retired in March 2008 and placed on display at the [[National Museum of the United States Air Force|National Museum of the US Air Force]] at [[Wright-Patterson Air Force Base|Wright-Patterson AFB]], Ohio on 8 July 2008. This MH-53 carried the command element during [[Operation Ivory Coast]], the mission to rescue American prisoners of war from the [[Son Tay]] North Vietnamese prison camp in 1970.<ref name="ivory">Bardua, Rob. [http://www.nationalmuseum.af.mil/news/story.asp?id=123105770 "New MH-53M helicopter exhibit opens at the National Museum of the U.S. Air Force"] {{webarchive|url=https://web.archive.org/web/20080723155648/http://www.nationalmuseum.af.mil/news/story.asp?id=123105770 |date=2008-07-23 }}. USAF National Museum, 8 July 2008.</ref>
MH-53M Pave Low IV, AF Serial Number 73-1652, flew in to the [[Air Force Armament Museum]] on 5 September 2008 for subsequent display. The helicopter was retired from the inventory of the [[20th Special Operations Squadron]] (20 SOS) at nearby [[Hurlburt Field]], Florida.
*MH-53M Pave Low IV, AF serial number 70-1626, was retired 11 August 2008 and will be placed on display at the [[Museum of Aviation (Warner Robins)|Museum of Aviation]], [[Robins Air Force Base|Robins AFB]], Georgia.<ref>Purser, Becky. [http://www.macon.com/197/story/429474.html "Celebrated combat search and rescue helicopter finds new home at Robins"]{{dead link|date=February 2018 |bot=InternetArchiveBot |fix-attempted=yes }}. macon.com</ref>
*MH-53M Pave Low IV, AF serial number 68-8284, was retired on 30 September 2008 and arrived at the Cold War Exhibition at the Royal Air Force Museum, [[DCAE Cosford|RAF Cosford]], UK on 17 December 2008.<ref>Willetts, Richard. [http://www.airshows.co.uk/feature-reports/2008/raf-cosford-mh-53-delivery.html "RAF Cosford MH-53 Delivery Feature Report, 17 December 2008"] {{webarchive|url=https://web.archive.org/web/20090617071414/http://www.airshows.co.uk/feature-reports/2008/raf-cosford-mh-53-delivery.html |date=17 June 2009 }}</ref>
*MH-53M Pave Low IV, AF serial number 73-1652, was retired 5 September 2008 and placed on display at the [[Air Force Armament Museum]] next to [[Eglin Air Force Base|Eglin AFB]]. This MH-53M was involved in operations shortly after the [[Jonestown Massacre]].<ref>Getlin, Noel, [http://www.rotorheadsrus.us/documents/Last%20flight%20for%20the%20Pave%20Low%20near%20Shalimar.pdf Hurlburt MH-53 flies last mission to where it is displayed at the Air Force Armament Museum] 5 September 2008, Eglin Dispatch</ref>
*MH-53M Pave Low IV, AF serial number 73-1649. It was retired and intended for a museum when it erroneously ended up in the "Boneyard" of the [[309th Aerospace Maintenance and Regeneration Group]]. Its last dedicated Crew Chief discovered it and "rescued" it. It is on display at the [[Pima Air & Space Museum]].<ref>{{cite web|url=http://www.pimaair.org/aircraft-by-name/item/sikorsky-mh-53m-pave-low-iv|title=PAVE LOW IV|website=www.pimaair.org|access-date=9 February 2019|archive-date=9 October 2016|archive-url=https://web.archive.org/web/20161009214229/http://www.pimaair.org/aircraft-by-name/item/sikorsky-mh-53m-pave-low-iv|url-status=dead}}</ref><ref>{{Cite web|url=http://www.dm.af.mil/news/story.asp?id=123248537|archive-url=https://web.archive.org/web/20131216174530/http://www.dm.af.mil/news/story.asp?id=123248537|url-status=dead|title="Restoration of a Jolly Green, Davis-Monthan Air Force Base News"|archive-date=December 16, 2013}}</ref>
*MH-53M Pave Low IV, AF serial number 69-5785, on display at [[Maxwell Air Force Base|Maxwell AFB]]. It was dedicated on June 8, 2009, and is in the base's Air Park.<ref name="Maxwell MH-53">{{cite web|last=Berquist|first=Carl|title=Maxwell dedicates veteran MH-53 to Air Park|url=http://www.aetc.af.mil/news/story.asp?id=123154042|archive-url=https://archive.today/20140422012030/http://www.aetc.af.mil/news/story.asp?id=123154042|url-status=dead|archive-date=22 April 2014|publisher=Air University|access-date=22 April 2014}}</ref>
*MH-53J Pave Low III, AF serial number 66-14433, on display at [[Kirtland Air Force Base|Kirtland AFB]]. This aircraft was the prototype for the Pave Low III configuration. It was the first H-53 to reach 10,000 flight hours.<ref>{{cite web|last=McCune|first=Christopher|title=Kirtland AFB's MH-53J Pave Low - a historic pioneer|date=2 September 2010 |url=http://www.kirtland.af.mil/News/Article-Display/Article/389987/kirtland-afbs-mh-53j-pave-low-a-historic-pioneer|access-date=19 Jan 2017}}</ref>
*MH-53M Pave Low IV, AF serial number 68-10369, was retired in September 2008 and is now on display at [[Hill Aerospace Museum]].<ref name="HillAerospace">{{cite web|url= https://aerospaceutah.org/museum/our-collections/aircraft-collection/mh-53m-pave-low-iv/|title= MH-53M Pave Low IV|access-date= 16 April 2021|author= Hill Aerospace Museum|author-link= Hill Aerospace Museum|work= aerospaceutah.org|year= 2021|archive-url= https://archive.today/20210416180224/https://aerospaceutah.org/museum/our-collections/aircraft-collection/mh-53m-pave-low-iv/|archive-date= 16 April 2021|url-status= live}}</ref>
*MH-53M Pave Low IV, AF serial number 68-10357, is on display at Cannon AFB, NM.


==Specifications (MH-53J)==
==Specifications (MH-53J)==
[[File:Sikorsky MH-53J Pave Low Line Drawing.svg|right|400px]]
[[File:Final Combat Mission of MH-53 Pave Low, Sept. 27, 2008, Iraq.jpg|right|thumb|MH-53 Pave Lows prepare to take off for their final combat mission on 27 September 2008, in Iraq.]]
[[File:Final Combat Mission of MH-53 Pave Low, Sept. 27, 2008, Iraq.jpg|right|thumb|MH-53 Pave Lows prepare to take off for their final combat mission on 27 September 2008, in Iraq.]]
{{Aircraft specs
|ref=USAF MH-53J/M,<ref name=USAF_fact_sht>[https://archive.today/20121212212244/http://www.af.mil/information/factsheets/factsheet.asp?id=117 MH-53J/M PAVE LOW fact sheet]. US Air Force, October 2007.</ref> International Directory,<ref name="Frawley Military">Frawley, Gerard: ''The International Directory of Military Aircraft'', p. 152. Aerospace Publications Pty Ltd, 2002. {{ISBN|1-875671-55-2}}.</ref> Vectorsite<ref name="Vector_MH-53">[http://www.vectorsite.net/avskbig.html#m5 USAF PAVE LOW: HH-53H / MH-53H, MH-53J, MH-53M, TH-53A]. Vectorsite.net, 1 April 2009.</ref>
|prime units?=kts
<!-- General characteristics
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|crew=6 (two pilots, two flight engineers and two aerial gunners)
|capacity=37 troops (55 in alternate configuration)
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|empty weight lb=32000
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|max takeoff weight lb=46000
|max takeoff weight note=normal
::::{{cvt|50000|lb}} fortime emergency
|fuel capacity=
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<!-- Powerplant
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|eng1 number=2
|eng1 name=[[General Electric T64-GE-100]]
|eng1 type=[[turboshaft]] engines
|eng1 shp=4330
|eng1 note=


|rot number=1
{{aircraft specification
|rot dia m=<!-- helicopters -->
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|rot dia ft=72
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|rot dia in=0
|plane or copter?=copter
|rot area sqft=<!-- helicopters -->
|jet or prop?=prop
|rot area note=<!--'''root:''' [[NACA airfoil|NACA ]]; '''tip:''' [[NACA airfoil|NACA ]]<ref name="Selig">{{cite web |last1=Lednicer |first1=David |title=The Incomplete Guide to Airfoil Usage |url=https://m-selig.ae.illinois.edu/ads/aircraft.html |website=m-selig.ae.illinois.edu |access-date=16 April 2019}}</ref>-->
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<!-- Performance
|ref=USAF MH-53J/M,<ref>[http://www.af.mil/factsheets/factsheet.asp?id=117 MH-53J/M PAVE LOW fact sheet], US Air Force.</ref> International Directory<ref name="Frawley Military">Frawley, Gerard: ''The International Directory of Military Aircraft'', p. 152. Aerospace Publications Pty Ltd, 2002. ISBN 1-875671-55-2.</ref>
-->
|crew=6 (two pilots, two flight engineers and two gunners)
|max speed kts=170
|capacity=approx. 38 troops
|max speed note=
|length main=88 ft
|cruise speed kts=150
|length alt=28 m
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|span alt=21.9 m
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|range nmi=600
|height alt=7.6 m
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|area main=
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|empty weight main=32,000 [[pound (mass)|lb]]
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|empty weight alt=14,515 kg
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|max takeoff weight main=46,000 lb (50,000 lb in war time)
|ceiling note=
|max takeoff weight alt=21,000 kg
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|more general='''Rotor system''': 6 blades
|climb rate ftmin=
|engine (prop)=[[General Electric T64|T64-GE-100]]
|climb rate note=
|type of prop=[[turboshaft]]
|time to altitude=
|number of props=2
|disk loading lb/sqft=
|power main=4,330 [[Horsepower#Shaft horsepower|shp]]
|disk loading note=
|power alt=3,230 kW
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|max speed main=170 [[knot (speed)|knots]]
|power/mass=
|max speed alt=196 mph, 315 km/h
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* Any combination of three [[7.62x51mm NATO|7.62 mm]] [[Minigun]]s or [[.50 BMG]] (12.7 mm) machine guns mounted on left and right sides (immediately behind flight deck) and ramp
|guns=
* Any combination of three [[7.62×51mm NATO]] [[M134 Minigun]]s and/or [[12.7×99mm NATO]] (.50 BMG) [[M2 Browning machine gun]]s mounted on left and right sides (immediately behind flight deck) and ramp
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==Notable appearances in media==
==Popular culture==
<!-- All content about the aircraft in fictional and gaming use has been moved to [[Aircraft in fiction, please see [[WP:AIRPOP]] -->
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{{Main article|Aircraft in fiction#Sikorsky H-53 series}}

The MH-53 Pave Low is featured in the [[Transformers (film)|2007 ''Transformers'' film]] as the alternate mode of [[Blackout (Transformers)|Blackout]]. Production designer Jeff Mann stated "the Pave Low looks butch... the size made it the logical choice."<ref>{{cite news | title = The Making Of The Transformers Movie - Production Design: The Robots, The Vehicles, The Sets | publisher = ENI | date = 15 June 2007 | url = http://enewsi.com/news.php?catid=190&itemid=11213 | accessdate=2007-09-13}}</ref> The same design was later used for the characters of [[Evac]] and [[Whirl (Transformers)|Whirl]].
<!-- Read note at top about major roles and look-a-likes. -->


==See also==
==See also==
[[File:MH-53 Pave Low 73-1649.JPG|thumb|MH-53M Pave Low IV]]
{{aircontent
{{aircontent
|see also=

|related=
|related=
* [[Sikorsky S-61R|HH-3E "Jolly Green Giant"]]
* [[CH-53 Sea Stallion]]
* [[CH-53 Sea Stallion]]
* [[CH-53E Super Stallion]]
* [[CH-53E Super Stallion]]
* [[Sikorsky S-61R|HH-3E "Jolly Green Giant"]]
|similar aircraft=
|similar aircraft=
* [[CH-47 Chinook|MH-47 Chinook]]
* [[CH-47 Chinook|MH-47 Chinook]]
* [[Sikorsky HH-60 Pave Hawk]]
|lists=
|lists=
* [[List of active military aircraft of the United States]]
* [[List of active United States military aircraft]]
* [[List of helicopters]]
* [[List of rotorcraft]]
* [[List of military electronics of the United States]]
|see also=
}}
}}


==References==
==References==
{{reflist}}
{{reflist|2}}
{{vectorsite}}
''This article contains information that originally came from a US Government website, in the public domain.'' [http://www.af.mil/factsheets/factsheet.asp?fsID=117 USAF Website]


==External links==
==External links==
{{Commons category|HH-53/MH-53 (US Air Force)}}
{{commons|CH-53}}
{{vectorsite}}
* [http://www.af.mil/factsheets/factsheet.asp?id=117 MH-53J/M USAF fact sheet]
* [https://archive.today/20121212212244/http://www.af.mil/information/factsheets/factsheet.asp?id=117 USAF MH-53 page (archived)]
* [http://www.thepavecave.com ThePaveCave.com, the unofficial PAVE LOW web site]
* [https://pavelow.us USAF MH-53 PAVE LOW site]
* [http://www.globalsecurity.org/military/systems/aircraft/hh-53.htm HH-53], [http://www.globalsecurity.org/military/systems/aircraft/mh-53j.htm MH-53J Pave Low III], and [http://www.globalsecurity.org/military/systems/aircraft/mh-53m.htm MH-53M Pave Low IV pages on GlobalSecurity.org]
* [http://www.globalsecurity.org/military/systems/aircraft/hh-53.htm HH-53], [http://www.globalsecurity.org/military/systems/aircraft/mh-53j.htm MH-53J Pave Low III], and [http://www.globalsecurity.org/military/systems/aircraft/mh-53m.htm MH-53M Pave Low IV pages on GlobalSecurity.org]
* [http://www.afsoc.af.mil/news/story.asp?id=123114506 "PAVE LOW dedicated into AF Armament Museum"], US Air Force, 10 September 2008.


{{Sikorsky Aircraft}}
{{Sikorsky Aircraft}}
{{US helicopters}}
{{US helicopters}}
{{aviation lists}}
{{PAVE US}}
{{USAF system codes}}

[[Category:Military helicopters]]
[[Category:Vietnam War aircraft]]


[[es:MH-53 Pave Low]]
{{DEFAULTSORT:MH-53 PAVE LOW}}
[[Category:United States military helicopters|Sikorsky MH-53 Pave Low]]
[[ja:MH-53 (航空機)]]
[[Category:Sikorsky aircraft|H-053, M]]
[[fi:MH-53 Pave Low]]
[[Category:1960s United States helicopters]]
[[zh:MH-53直升機]]
[[Category:Twin-turbine helicopters]]
[[Category:Aircraft first flown in 1967]]
[[Category:Sikorsky H-53]]

Latest revision as of 22:06, 24 November 2024

"MH-53" redirects here. For the MH-53E Sea Dragon minesweeper variant, see Sikorsky CH-53E Super Stallion.
HH-53 "Super Jolly Green Giant"
MH-53 Pave Low
A MH-53 Pave Low from the 20th Special Operations Squadron at Hurlburt Field, Florida
General information
TypeHeavy-lift helicopter
ManufacturerSikorsky Aircraft
StatusRetired[1]
Primary userUnited States Air Force
Number built72[2]
History
Manufactured1967–1970
Introduction date1968
First flight15 March 1967
Retired30 September 2008
Developed fromSikorsky CH-53 Sea Stallion

The Sikorsky MH-53 Pave Low series is a retired long-range special operations and combat search and rescue (CSAR) helicopter for the United States Air Force. The series was upgraded from the HH-53B/C, variants of the Sikorsky CH-53 Sea Stallion. The HH-53 "Super Jolly Green Giant" was initially developed to replace the HH-3E "Jolly Green Giant". The U.S. Air Force's MH-53J/M fleet was retired in September 2008.[1]

Design and development

[edit]
HH-53C refuels, 1987

The US Air Force ordered 72 HH-53B and HH-53C variants for Search and Rescue units during the Vietnam War, and later developed the MH-53J Pave Low version for Special Operations missions.

The Pave Low's mission was low-level, long-range, undetected penetration into denied areas, day or night, in adverse weather, for infiltration, exfiltration and resupply of special operations forces. Pave Lows often worked in conjunction with MC-130H Combat Talon for navigation, communications and combat support,[3] and with MC-130P Combat Shadow for in-flight refueling.[4][5]

The large green airframe of the HH-53B earned it the nickname "Super Jolly Green Giant". This name is a reference to the smaller HH-3E "Jolly Green Giant", a stretched variant of the H-3 Sea King, used in the Vietnam War for combat search-and-rescue (CSAR) operations.

HH-53B

[edit]

The US Air Force regarded their Sikorsky S-61R/HH-3E "Jolly Green Giant" long-range CSAR helicopters favorably and was interested in the more capable S-65/CH-53A. In 1966, the USAF awarded a contract to Sikorsky for development of a CSAR variant of the CH-53A.[6]

A HH-53B of the 40th Aerospace Rescue and Recovery Squadron refueling from a HC-130P Hercules over North Vietnam, 1969–70

The HH-53B, as it was designated, featured:

  • A retractable in-flight refueling probe on the right side of the nose
  • Spindle-shaped jettisonable external tanks with a capacity of 650 US gallons (2,461 L), fitted to the sponsons and braced by struts attached to the fuselage
  • A rescue hoist above the right passenger door, capable of deploying a forest penetrator on 250 feet (76 m) of steel cable
  • Armament of three pintle-mounted General Electric GAU-2/A 7.62 mm (.308 in) six-barreled Gatling-type machine guns, with one in a forward hatch on each side of the fuselage and one mounted on the tail ramp, with the gunner secured with a harness
  • A total of 1,200 pounds (540 kg) of armor
  • A Doppler navigation radar in the forward belly

Early HH-53Bs featured T64-GE-3 turboshafts with 3,080 shaft horsepower (2,297 kW) each, but these engines were later upgraded to T64-GE-7 turboshafts with 3,925 shaft horsepower (2,927 kW). Five crew were standard, including a pilot, copilot, crew chief, and two pararescuemen.[6]

HH-53C

[edit]
An HH-53C lowering a PJ during a rescue mission, June 1970

The HH-53B was essentially an interim type, with production quickly moving on to the modestly improved Air Force HH-53C CSAR variant. The most visible difference between the HH-53B and HH-53C was that the HH-53C dispensed with the fuel-tank bracing struts. Experience with the HH-53B showed that the original tank was too big, adversely affecting performance when they were fully fueled, and so a smaller 450 US gal (1,703 L) tank was adopted in its place. Other changes included more armor and a more comprehensive suite of radios to improve communications with C-130 tankers, attack aircraft supporting CSAR actions, and aircrews awaiting rescue on the ground. The HH-53C was otherwise much like the HH-53B, with the more powerful T64-GE-7 engines.[6]

A HH-53 seen from the gunner's position of a helicopter over Vietnam in October 1972

A total of 44 HH-53Cs were built, with introduction to service in August 1968. Late in the Vietnam War they were fitted with countermeasures pods to deal with heat-seeking missiles. As with the HH-53B, the HH-53C was also used for covert operations and snagging reentry capsules, as well as snagging reconnaissance drones. A few were assigned to support the Apollo space program, standing by to recover an Apollo capsule in case of a launchpad abort, though such an accident never happened.[6]

In addition to the HH-53Cs, the Air Force obtained 20 CH-53C helicopters for more general transport work. The CH-53C was apparently very similar to the HH-53C, even retaining the rescue hoist, the most visible difference being that the CH-53C did not have an in-flight refueling probe. Since CH-53Cs were used for covert operations, they were armed and armored like HH-53Cs.[6] A good number of Super Jollies were converted into Pave Low special-operations helicopters.[6] PAVE or Pave is an Air Force code name for a number of weapons systems using advanced electronics.

HH/MH-53H

[edit]
MH-53H Pave Low III
MH-53H Pave Low on an extraction exercise, 1988

The USAF's Super Jollies were essentially daylight / fair weather machines, and downed aircrew were often in trouble at night or in bad weather. A limited night / foul weather sensor system designated "Pave Low I" based on a low-light-level TV (LLLTV) imager was deployed to Southeast Asia in 1969 and combat-evaluated on a Super Jolly, but reliability was not adequate.[6]

In 1975, an HH-53B was fitted with the much improved "Pave Low II" system and re-designated YHH-53H. This exercise proved much more satisfactory, and so eight HH-53Cs were given a further improved systems fit and redesignated HH-53H Pave Low III, with the YHH-53H also upgraded to this specification. All were delivered in 1979 and 1980.[6]

The HH-53H retained the in-flight refueling probe, external fuel tanks, rescue hoist, and three-gun armament of the HH-53C; armament was typically a minigun on each side, and a Browning .50 in (12.7 mm) gun in the tail to provide more reach and a light anti-armor capability. The improvements featured by the HH-53H included:

  • A Texas Instruments AN/AAQ-10 forward-looking infrared (FLIR) imager.
  • A Texas Instruments AN/APQ-158 terrain-following radar (TFR), which was a digitized version of the radar used by the A-7. It was further modified to be able to give terrain avoidance and terrain following commands simultaneously (first aircraft capable of this unique feature).[citation needed]
  • A Canadian Marconi Doppler-radar navigation system.
  • A Litton or Honeywell inertial guidance system (INS).
  • A computerized moving-map display.[6]
  • A radar-warning receiver (RWR) and chaff-flare dispensers.

The FLIR and TFR were mounted on a distinctive "chin" mount. The HH-53H could be fitted with 27 seats for troops or 14 litters. The upgrades were performed by the Navy in Pensacola, reflecting the fact that the Navy handled high-level maintenance on Air Force S-65s. In 1986, the surviving HH-53Hs were given an upgrade under the CONSTANT GREEN program, featuring incremental improvements such as a cockpit with blue-green lighting compatible with night vision goggles (NVGs). They were then reclassified as "special operations" machines and accordingly given a new designation of MH-53H.[6]

A MH-53J Pave Low IIIE of the 551st Special Operations Squadron, 58th Special Operations Wing, flying a training mission

The HH-53H proved itself and the Air Force decided to order more, coming up with an MH-53J Pave Low III Enhanced configuration. The general configuration of the MH-53J is similar to that of the HH-53J, the major change being fit of twin T64-GE-415 turboshafts with 4,380 shp (3,265 kW) each, as well as more armor, giving a total armor weight of 1,000 lb (450 kg). There were some avionics upgrades as well, including fit of a modern Global Positioning System (GPS) satellite navigation receiver. A total of 31 HH-53Bs, HH-53Cs, and CH-53Cs were upgraded to the MH-53J configuration from 1986 through 1990, with all MH-53Hs upgraded as well, providing a total of 41 MH-53Js.[6]

MH-53J/M

[edit]
A MH-53M Pave Low IV of the 21st Special Operations Squadron approaches the refueling basket of an MC-130P Combat Shadow for in-flight refueling during the 2000 Mozambique flood.

The MH-53J Pave Low III helicopter was the largest, most powerful and technologically advanced transport helicopter in the US Air Force inventory. The terrain-following and terrain-avoidance radar, forward looking infrared sensor, inertial navigation system with Global Positioning System, along with a projected map display enable the crew to follow terrain contours and avoid obstacles, making low-level penetration possible.

Under the Pave Low III program, the Air Force modified nine MH-53Hs and 32 HH-53s for night and adverse weather operations. Modifications included AN/AAQ-18 forward-looking infrared, inertial navigation system, global positioning system, Doppler navigation systems, APQ-158 terrain-following and terrain-avoidance radar, an on-board mission computer, enhanced navigation system, and integrated avionics to enable precise navigation to and from target areas. The Air Force designated these modified versions as MH-53J.

The MH-53J's main mission was to drop off, supply, and pick up special operations forces behind enemy lines. It also can engage in combat search and rescue missions. Low-level penetration was made possible by a state-of-the-art terrain following radar, as well as infrared sensors that allow the helicopter to operate in bad weather. It was equipped with armor plating. It could transport 38 troops at a time and sling up to 20,000 pounds (9,000 kg) of cargo with its external hook. It was capable of a top speed of 165 mph (266 km/h) and had a ceiling of 16,000 feet (4,900 m).

Four MH-53M Pave Low IV, 2008

The MH-53M Pave Low IV was modified from the MH-53J configuration with the addition of Interactive Defensive Avionics System/Multi-Mission Advanced Tactical Terminal or IDAS/MATT. The system enhanced the defensive capabilities of the Pave Low. It provided instant access to the total battlefield situation, through near real-time Electronic Order of Battle updates. It also provided a new level of detection avoidance with near real-time threat broadcasts over-the-horizon, so crews can avoid and defeat threats, and replan en route if necessary.

Operational history

[edit]
Special forces depart a MH-53 Pave Low

While waiting for delivery of the HH-53Bs, the Air Force obtained two Marine CH-53As for evaluation and training. The first of eight HH-53Bs performed its initial flight on 15 March 1967, and the type was performing CSAR missions with the USAF Aerospace Rescue & Recovery Service in Southeast Asia by the end of the year. The Air Force called the HH-53B the "Super Jolly". It was used for CSAR, covert combat operations, and "snagging" reentry capsules from photo-reconnaissance satellites.[6]

The Air Force lost 17 Super Jollies during the Southeast Asia conflict, with 14 lost in combat – including one that was shot down by a North Vietnamese MiG-21 on 28 January 1970 while on a CSAR mission over Laos – and three lost in accidents.[6] The Super Jollies made headlines in November 1970 in the unsuccessful raid into North Vietnam to rescue prisoners-of-war from the Son Tay prison camp, as well as in the operation to rescue the crew of the freighter SS Mayagüez from Cambodian Khmer Rouge fighters in May 1975.

View out of MH-53M Pave Low IV in 2002, with its ramp open

The HH-53B, HH-53C, and CH-53C remained in Air Force service into the late 1980s. Super Jollies operating in front-line service were painted in various camouflage color schemes, while those in stateside rescue service were painted in an overall gray scheme with a yellow tailband.[6]

The first nine HH-53H Pave Lows became operational on 1 July 1980, and were transferred from the Military Airlift Command, where they were to have been CSAR assets, to the 1st Special Operations Wing in the aftermath of the Operation Eagle Claw disaster. Two of the HH-53Hs were lost in training accidents in 1984, and so two CH-53Cs were brought up to HH-53H standard as replacements.[6]

Five MH-53Js of the 20th Special Operations Squadron deployed to Panama as part of Operation Just Cause in December 1989. During the operation, MH-53Js conducted missions including reconnaissance, small team insertion, medivac, logistics, and fire support. The MH-53's terrain-following and terrain-avoidance radar, along with GPS, enabled the helicopters to reach objectives other helicopters could not; in one case, an MH-53 used its precision navigation capability to lead a SEAL team on MH-6 Little Bird helicopters to their remote objective. 20th SOS crews flew 193 sorties during the operation, totaling 406.1 hours of flying time.[7]

The MH-53 Pave Low's last mission was on 27 September 2008, when the remaining six helicopters flew in support of special operations forces in Southwest Asia. These MH-53Ms were retired shortly thereafter and replaced with the V-22 Osprey.[1][8][9]

Variants and modification/upgrade programs

[edit]
MH-53 Pave Lows fly over Iraq on their last combat missions in September 2008, before their retirement.
  • TH-53A – training version used by US Air Force (USAF)
  • HH-53B – CH-53A type for USAF search and rescue (SAR). All helicopters modified with an experimental Limited Night Recovery System (LNRS).[10] Some modified to Pave Imp LNRS-standard.[11] One HH-53B serial number 66-14433 converted to Pave Low I Test Bed at Edwards Air Force Base in 1972.[12] HH-53B 66-14433 consequently became the YHH-53H Black Knight.[13]
  • Pave Star - Program designed to address shortcomings of LNRS and deliver an improved night infiltration and rescue capability. Cancelled due to multiple technical issues and cost overruns[14][15]
  • Pave Imp - LNRS developed by USAF Air Force Systems Command. Replaced Pave Star. Some HH-53B and C's converted. Used in action during the Vietnam War[16][17]
  • CH-53C – heavy-lift version for USAF, 22 built
  • HH-53C – "Super Jolly Green Giant", improved HH-53B for USAF. Some fitted with Pave Imp LNRS.[18]
  • Pave Low I - Program built on lessons learned from Pave Star, Pave Imp and LNRS. A proof-of-concept test program with the objective of developing a true night and all-weather capability for the HH-53. The main difference from earlier programs centred around the evaluation of a modified Norden AN/APQ-141 Terrain Following/Terrain Avoidance radar along with associated instrumentation, and modifications to existing systems.[19]
  • Pave Low II - Program which aimed to address three distinct limitations identified in previous programs; the inability to avoid terrain and exposure to hostile radar/sensor-directed threats at low level; insufficient accuracy in the navigation system to reach the rescue area at low level; and inability to precisely locate the survivor(s) and hold a hover over his/her position.[20]
  • Pave Low III - Follow-on program to Pave Low II, but with the LNRS-vintage Low Level Light Television (LLLTV) system replaced with the more capable AN/AAQ-10 Forward-looking Infrared (FLIR) sensor, along with the installation of the AN/APQ-158 Terrain Following/Terrain Avoidance Radar and an Inertial Navigation System. Other equipment additions included a central avionics computer and a projected map display system[21][22]
MH-53M in May 2007
  • YHH-53H Black Knight – HH-53B 66-14433 Test Bed for Pave Low II and Pave Low III systems. Became Pave Low III prototype. Later brought up to Pave Low III production standard.[23]
  • HH-53H – Production standard Pave Low III variant. Eight HH-53Cs, two CH-53Cs and the YHH-53H Black Knight were upgraded to this standard at the Naval Air Rework Facility in Naval Air Station (NAS) Pensacola, Florida.[24]
  • MH-53H – Re-designation of HH-53H to highlight the additional role of Special Operations in conjunction with its original SAR role.
  • MH-53J – "Pave Low IIIE (E for Enhanced)" Upgraded MH-53H. Improved variant with integrated digital avionics, an upgraded transmission, more powerful engines, and various enhanced mission and defensive systems. Remaining HH-53B and C-variants converted to this standard.
  • MH-53M – "Pave Low IV" upgraded MH-53Js

For other H-53 variants, see CH-53 Sea Stallion, CH-53E Super Stallion and CH-53K King Stallion.

Operator

[edit]
 United States

Aircraft on display

[edit]
An MH-53M on display at Maxwell AFB
MH-53 displayed in a museum
  • MH-53M Pave Low IV, AF serial number 68-10928, was retired 29 July 2007 and placed on display at Air Commando Park, Hurlburt Field, Florida on 3 December 2007. This helicopter took part in the May 1975 Mayagüez incident rescue operation and sustained major battle damage to the engine, rotor blades, and instrument panel. The aircraft flew in combat during the War in Afghanistan and the War in Iraq for its last seven years of service, completing its last combat mission in Iraq during the summer 2007.[26]
  • MH-53M Pave Low IV, AF serial number 68-10357, was retired in March 2008 and placed on display at the National Museum of the US Air Force at Wright-Patterson AFB, Ohio on 8 July 2008. This MH-53 carried the command element during Operation Ivory Coast, the mission to rescue American prisoners of war from the Son Tay North Vietnamese prison camp in 1970.[2]
  • MH-53M Pave Low IV, AF serial number 70-1626, was retired 11 August 2008 and will be placed on display at the Museum of Aviation, Robins AFB, Georgia.[27]
  • MH-53M Pave Low IV, AF serial number 68-8284, was retired on 30 September 2008 and arrived at the Cold War Exhibition at the Royal Air Force Museum, RAF Cosford, UK on 17 December 2008.[28]
  • MH-53M Pave Low IV, AF serial number 73-1652, was retired 5 September 2008 and placed on display at the Air Force Armament Museum next to Eglin AFB. This MH-53M was involved in operations shortly after the Jonestown Massacre.[29]
  • MH-53M Pave Low IV, AF serial number 73-1649. It was retired and intended for a museum when it erroneously ended up in the "Boneyard" of the 309th Aerospace Maintenance and Regeneration Group. Its last dedicated Crew Chief discovered it and "rescued" it. It is on display at the Pima Air & Space Museum.[30][31]
  • MH-53M Pave Low IV, AF serial number 69-5785, on display at Maxwell AFB. It was dedicated on June 8, 2009, and is in the base's Air Park.[32]
  • MH-53J Pave Low III, AF serial number 66-14433, on display at Kirtland AFB. This aircraft was the prototype for the Pave Low III configuration. It was the first H-53 to reach 10,000 flight hours.[33]
  • MH-53M Pave Low IV, AF serial number 68-10369, was retired in September 2008 and is now on display at Hill Aerospace Museum.[34]
  • MH-53M Pave Low IV, AF serial number 68-10357, is on display at Cannon AFB, NM.

Specifications (MH-53J)

[edit]
MH-53 Pave Lows prepare to take off for their final combat mission on 27 September 2008, in Iraq.

Data from USAF MH-53J/M,[35] International Directory,[36] Vectorsite[37]

General characteristics

  • Crew: 6 (two pilots, two flight engineers and two aerial gunners)
  • Capacity: 37 troops (55 in alternate configuration)
  • Length: 88 ft (27 m)
  • Height: 25 ft (7.6 m)
  • Empty weight: 32,000 lb (14,515 kg)
  • Max takeoff weight: 46,000 lb (20,865 kg) normal
50,000 lb (23,000 kg) fortime emergency

Performance

  • Maximum speed: 170 kn (200 mph, 310 km/h)
  • Cruise speed: 150 kn (170 mph, 280 km/h)
  • Range: 600 nmi (690 mi, 1,100 km) can be extended with in-flight refueling
  • Service ceiling: 16,000 ft (4,900 m)

Armament

Notable appearances in media

[edit]
Main article: Aircraft in fiction § Sikorsky H-53 series

See also

[edit]
MH-53M Pave Low IV

Related development

Aircraft of comparable role, configuration, and era

Related lists

References

[edit]
  1. ^ a b c "MH-53s fly final combat missions". US Air Force, 1 October 2008.
  2. ^ a b Bardua, Rob. "New MH-53M helicopter exhibit opens at the National Museum of the U.S. Air Force" Archived 2008-07-23 at the Wayback Machine. USAF National Museum, 8 July 2008.
  3. ^ MC-130E/H Combat Talon I/II Fact Sheet, US Air Force.
  4. ^ MC-130P Combat Shadow Fact Sheet, US Air Force.
  5. ^ MH-53J page. Globalsecurity.org
  6. ^ a b c d e f g h i j k l m n o "vectorsite.net". www1.vectorsite.net. Retrieved 9 February 2019.
  7. ^ Whitcomb, Darrel D. (2012). On a Steel Horse I Ride: A History of the MH-53 Pave Low Helicopters in War and Peace (PDF). Montgomery, Alabama: Air University Press. pp. 265–274. ISBN 978-1-58566-220-3.
  8. ^ Whitcomb, D.D. (2012). On a Steel Horse I Ride: A History of the MH-53 Pave Low Helicopters in War and Peace. Maxwell Air Force Base, AL: Air University Press, Air Force Research Institute.
  9. ^ "Bye-Bye Pave Low, Hello Osprey". Military.com. 8 October 2008.
  10. ^ Project CHECO South East Asia Report - USAF Search and Rescue November 1967 to June 1969. HQ PACAF Directorate, Tactical Evaluation CHECO Division. July 30, 1969
  11. ^ On a Steel Horse I ride - A History of the MH-53 Pave Low Helicopters in War and Peace - Darrel D. Whitcomb - Air University Press. Air Force Research Institute. Maxwell Air Force Base, Alabama 2012
  12. ^ Pave Low - Evaluation of a Terrain Following Radar System for the HH-53 Helicopter. Technical Report No. 73-11 March 1973. Air Force Flight Test Center. Edwards Air Force Base, California, Air Force Systems Command, United States Air Force
  13. ^ On a Steel Horse I ride - A History of the MH-53 Pave Low Helicopters in War and Peace - Darrel D. Whitcomb - Air University Press. Air Force Research Institute. Maxwell Air Force Base, Alabama 2012
  14. ^ On a Steel Horse I ride - A History of the MH-53 Pave Low Helicopters in War and Peace - Darrel D. Whitcomb - Air University Press. Air Force Research Institute. Maxwell Air Force Base, Alabama 2012
  15. ^ MH-53J/M Pave Low III/IV Systems Engineering Case Study by W. Albery Ph.D, Raymond L. Robb & Lt. Col. Lee Anderson (2010). Air Force Institute of Technology. Air Force Center for Systems Engineering
  16. ^ On a Steel Horse I ride - A History of the MH-53 Pave Low Helicopters in War and Peace - Darrel D. Whitcomb - Air University Press. Air Force Research Institute. Maxwell Air Force Base, Alabama 2012
  17. ^ MH-53J/M Pave Low III/IV Systems Engineering Case Study by W. Albery Ph.D, Raymond L. Robb & Lt. Col. Lee Anderson (2010). Air Force Institute of Technology. Air Force Center for Systems Engineering
  18. ^ MH-53J/M Pave Low III/IV Systems Engineering Case Study by W. Albery Ph.D, Raymond L. Robb & Lt. Col. Lee Anderson (2010). Air Force Institute of Technology. Air Force Center for Systems Engineering
  19. ^ Pave Low - Evaluation of a Terrain Following Radar System for the HH-53 Helicopter. Technical Report No. 73-11 March 1973. Air Force Flight Test Center. Edwards Air Force Base, California, Air Force Systems Command, United States Air Force
  20. ^ MH-53J/M Pave Low III/IV Systems Engineering Case Study by W. Albery Ph.D, Raymond L. Robb & Lt. Col. Lee Anderson (2010). Air Force Institute of Technology. Air Force Center for Systems Engineering
  21. ^ MH-53J/M Pave Low III/IV Systems Engineering Case Study by W. Albery Ph.D, Raymond L. Robb & Lt. Col. Lee Anderson (2010). Air Force Institute of Technology. Air Force Center for Systems Engineering
  22. ^ On a Steel Horse I ride - A History of the MH-53 Pave Low Helicopters in War and Peace - Darrel D. Whitcomb - Air University Press. Air Force Research Institute. Maxwell Air Force Base, Alabama 2012
  23. ^ MH-53J/M Pave Low III/IV Systems Engineering Case Study by W. Albery Ph.D, Raymond L. Robb & Lt. Col. Lee Anderson (2010). Air Force Institute of Technology. Air Force Center for Systems Engineering
  24. ^ MH-53J/M Pave Low III/IV Systems Engineering Case Study by W. Albery Ph.D, Raymond L. Robb & Lt. Col. Lee Anderson (2010). Air Force Institute of Technology. Air Force Center for Systems Engineering
  25. ^ "USAF". helis.com. Retrieved 5 January 2013.
  26. ^ Hurlburt Field, MH-53 Pave Low Archived 2011-07-28 at the Wayback Machine, Fact Sheet, retrieved 24 March 2012
  27. ^ Purser, Becky. "Celebrated combat search and rescue helicopter finds new home at Robins"[permanent dead link‍]. macon.com
  28. ^ Willetts, Richard. "RAF Cosford MH-53 Delivery Feature Report, 17 December 2008" Archived 17 June 2009 at the Wayback Machine
  29. ^ Getlin, Noel, Hurlburt MH-53 flies last mission to where it is displayed at the Air Force Armament Museum 5 September 2008, Eglin Dispatch
  30. ^ "PAVE LOW IV". www.pimaair.org. Archived from the original on 9 October 2016. Retrieved 9 February 2019.
  31. ^ ""Restoration of a Jolly Green, Davis-Monthan Air Force Base News"". Archived from the original on 16 December 2013.
  32. ^ Berquist, Carl. "Maxwell dedicates veteran MH-53 to Air Park". Air University. Archived from the original on 22 April 2014. Retrieved 22 April 2014.
  33. ^ McCune, Christopher (2 September 2010). "Kirtland AFB's MH-53J Pave Low - a historic pioneer". Retrieved 19 January 2017.
  34. ^ Hill Aerospace Museum (2021). "MH-53M Pave Low IV". aerospaceutah.org. Archived from the original on 16 April 2021. Retrieved 16 April 2021.
  35. ^ MH-53J/M PAVE LOW fact sheet. US Air Force, October 2007.
  36. ^ Frawley, Gerard: The International Directory of Military Aircraft, p. 152. Aerospace Publications Pty Ltd, 2002. ISBN 1-875671-55-2.
  37. ^ USAF PAVE LOW: HH-53H / MH-53H, MH-53J, MH-53M, TH-53A. Vectorsite.net, 1 April 2009.
[edit]
Wikimedia Commons has media related to HH-53/MH-53 (US Air Force).

The initial version of this article was based on a public domain article from Greg Goebel's Vectorsite.

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