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Allegheny Airlines Flight 737: Difference between revisions

Coordinates: 41°51′36″N 78°43′43″W / 41.86000°N 78.72861°W / 41.86000; -78.72861
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|name=Allegheny Airlines Flight 737
|name=Allegheny Airlines Flight 737
|Date= January 6, 1969
|Date= January 6, 1969
|Type=[[Controlled flight into terrain]]<ref name="NTSB AAR-70-10 Final Report">{{cite book |url=http://libraryonline.erau.edu/online-full-text/ntsb/aircraft-accident-reports/AAR70-10.pdf |title=Aircraft Accident Report, Allegheny Airlines, Inc., Allison Prop Jet Convair 440, N5825, near Bradford, Pennsylvania, January 6, 1969 |publisher=[[National Transportation Safety Board]] |id=NTSB-AAR-70-10 |date=May 27, 1970}}</ref>
|Type=[[Controlled flight into terrain]]
|Site=[[Lafayette Township, McKean County, Pennsylvania|Lafayette Township, McKean County]], near [[Bradford]], [[Pennsylvania]]
|Site=[[Lafayette Township, McKean County, Pennsylvania|Lafayette Township, McKean County]], near [[Bradford]], [[Pennsylvania]]
|Coordinates = {{coord|41|51|36|N|78|43|43|W|type:event|display=inline,title}}
|Coordinates = {{coord|41|51|36|N|78|43|43|W|type:event|display=inline,title}}
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==Cause==
==Cause==
The [[NTSB]] was unable to determine the probable cause of the crash. "Of some 13 potential causes examined by the Board, three remain after final analysis. They are: 1) misreading of the altimeter by the captain, 2) a malfunction of the captain's altimeter after completion of the instrument approach procedure turn, and 3) a misreading of the instrument approach chart. Of these three, no single one can be accepted or rejected to the exclusion of another based on the available evidence."<ref>[http://libraryonline.erau.edu/online-full-text/ntsb/aircraft-accident-reports/AAR70-10.pdf Allegheny Airlines, Inc., Allison Prop Jet Convair 440, N5825, near Bradford, Pennsylvania, January 6, 1969. (NTSB/AAR-70-10) NTSB Final report]</ref>
The [[NTSB]] was unable to determine the probable cause of the crash. "Of some 13 potential causes examined by the Board, three remain after final analysis. They are: 1) misreading of the altimeter by the captain, 2) a malfunction of the captain's altimeter after completion of the instrument approach procedure turn, and 3) a misreading of the instrument approach chart. Of these three, no single one can be accepted or rejected to the exclusion of another based on the available evidence."<ref name="NTSB AAR-70-10 Final Report"/>


{{Portal|United States|Aviation|Disasters}}
{{Portal|United States|Aviation|Disasters}}

Revision as of 23:06, 28 December 2017

Allegheny Airlines Flight 737
Occurrence
DateJanuary 6, 1969
SummaryControlled flight into terrain[1]
SiteLafayette Township, McKean County, near Bradford, Pennsylvania
41°51′36″N 78°43′43″W / 41.86000°N 78.72861°W / 41.86000; -78.72861
Aircraft typeConvair CV-580
OperatorAllegheny Airlines
RegistrationN5825
Flight originWashington D.C.
1st stopoverHarrisburg International Airport
DestinationBradford Regional Airport
Passengers25
Crew3
Fatalities11
Survivors17

. Allegheny Airlines Flight 737 was a Convair CV-580, registration N5825, that crashed while attempting to land at Bradford Regional Airport in Bradford, Pennsylvania on January 6, 1969. Eleven of the 28 occupants on board were killed.

Flight

Flight 737 took off from Washington D.C. bound for Detroit, Michigan with intermediate stops in Harrisburg, Bradford, and Erie, Pennsylvania. The flight was uneventful until the aircraft began its approach to Bradford. Weather was overcast with one and one half miles visibility and snow showers. At ten miles from the airport, Flight 737 requested and received clearance to make its instrument approach to runway 14 instead of runway 32.[2] The flight struck treetops just under five nautical miles from the airport before coming to rest upside down on a snow-covered golf course.[3]

Aftermath

Less than two weeks before flight 737 crashed, Allegheny Airlines Flight 736 also went down on approach to Bradford Airport on the same Detroit-Washington DC route via Erie, Bradford and Harrisburg. Both aircraft were approaching the same runway but in opposite directions at the time of the crashes.[4] Shortly after Flight 737's crash, Allegheny Airlines self-imposed new rules for landings at airports. The rules required visibility of 1,000 feet up and three miles out for any airport without instrument landing systems.[5]

Cause

The NTSB was unable to determine the probable cause of the crash. "Of some 13 potential causes examined by the Board, three remain after final analysis. They are: 1) misreading of the altimeter by the captain, 2) a malfunction of the captain's altimeter after completion of the instrument approach procedure turn, and 3) a misreading of the instrument approach chart. Of these three, no single one can be accepted or rejected to the exclusion of another based on the available evidence."[1]

References

  1. ^ a b Aircraft Accident Report, Allegheny Airlines, Inc., Allison Prop Jet Convair 440, N5825, near Bradford, Pennsylvania, January 6, 1969 (PDF). National Transportation Safety Board. May 27, 1970. NTSB-AAR-70-10.
  2. ^ Aircraft accident Convair CV-580 N5825 Bradford Airport, PA
  3. ^ Probers express amazement over similarity of 2 crashes
  4. ^ Common factor in crashes sought
  5. ^ Allegheny's restrictions cut landings