Simplified directional facility: Difference between revisions
Corrected area to show only one SDF approach remains. |
m Disambiguating links to KMOR (link changed to Morristown Regional Airport) using DisamAssist. |
||
(24 intermediate revisions by 15 users not shown) | |||
Line 1: | Line 1: | ||
{{short description|Aircraft approach}} |
|||
'''Simplified directional facility (SDF)''' |
'''Simplified directional facility (SDF)''' was a [[localizer]]-based instrument [[non-precision approach]] to an airport, which provided [[final approach]] course similar to [[instrument landing system]] (ILS) and [[localizer type directional aid]] (LDA) approaches, although not as precise. |
||
The SDF signal |
The SDF signal was fixed at either 6 or 12 degrees, as necessary to provide maximum flyability and optimum course quality.<ref name="AIM 1-1-10">AIM 1-1-10 (March 7, 2013 Revision), accessed 2013-07-06</ref> Unlike an ILS, an SDF did not provide vertical guidance in the form of a [[glideslope]].<ref name="AIM 1-1-10"/> The SDF course may or may not be aligned with the runway because its antenna may be offset from the runway centerline. Usable off-course indications are limited to 35 degrees either side of the course centerline.<ref name="AIM 1-1-10"/> |
||
== Current SDF approaches in the United States == |
== Current SDF approaches in the United States == |
||
As of November, 2025, the last SDR approach at [[Morristown Regional Airport|KMOR]] was permanently decommissioned. |
|||
<ref>{{cite web |url=http://www.faa.gov/air_traffic/flight_info/aeronav/digital_products/dtpp/ |title=digital – Terminal Procedures Publication (d-TPP)/Airport Diagrams |publisher=[[Federal Aviation Administration|FAA]] |accessdate=2024-11-13}}</ref><ref>{{cite web |url=https://www.faa.gov/air_traffic/flight_info/aeronav/procedures/ |title=Instrument Flight Procedures Information Gateway |publisher=[[Federal Aviation Administration|FAA]] |accessdate=2017-06-23}}</ref> |
|||
# KMOR, SDF RWY 05, [[Moore–Murrell Airport]], Morristown, TN |
|||
== See also == |
== See also == |
||
<!-- Please respect alphabetical order --> |
|||
* [[Instrument approach]] |
* [[Instrument approach]] |
||
* [[Instrument landing system]] |
* [[Instrument landing system]] |
||
Line 15: | Line 15: | ||
== References == |
== References == |
||
⚫ | |||
==External links== |
|||
* [http://www.faa.gov/air_traffic/publications/ATpubs/AIM/index.htm Aeronautical Information Manual (AIM)], published in US by [[Federal Aviation Administration]] |
* [http://www.faa.gov/air_traffic/publications/ATpubs/AIM/index.htm Aeronautical Information Manual (AIM)], published in US by [[Federal Aviation Administration]] |
||
* [https://pilotweb.nas.faa.gov/PilotWeb/ FAA NOTAM website] |
* [https://pilotweb.nas.faa.gov/PilotWeb/ FAA NOTAM website] |
||
⚫ | |||
[[Category:Aircraft landing systems]] |
[[Category:Aircraft landing systems]] |
||
{{Aviation-stub}} |
{{Aviation-stub}} |
Latest revision as of 15:35, 11 December 2024
Simplified directional facility (SDF) was a localizer-based instrument non-precision approach to an airport, which provided final approach course similar to instrument landing system (ILS) and localizer type directional aid (LDA) approaches, although not as precise.
The SDF signal was fixed at either 6 or 12 degrees, as necessary to provide maximum flyability and optimum course quality.[1] Unlike an ILS, an SDF did not provide vertical guidance in the form of a glideslope.[1] The SDF course may or may not be aligned with the runway because its antenna may be offset from the runway centerline. Usable off-course indications are limited to 35 degrees either side of the course centerline.[1]
Current SDF approaches in the United States
[edit]As of November, 2025, the last SDR approach at KMOR was permanently decommissioned. [2][3]
See also
[edit]References
[edit]- ^ a b c AIM 1-1-10 (March 7, 2013 Revision), accessed 2013-07-06
- ^ "digital – Terminal Procedures Publication (d-TPP)/Airport Diagrams". FAA. Retrieved 2024-11-13.
- ^ "Instrument Flight Procedures Information Gateway". FAA. Retrieved 2017-06-23.
External links
[edit]- Aeronautical Information Manual (AIM), published in US by Federal Aviation Administration
- FAA NOTAM website