# MD Helicopters 369FF

- Type: Aircraft model (FAA registry)
- Registry codes: 3030002, 3030015
- Manufacturer (registry): MD HELICOPTERS INC · MD HELICOPTERS LLC
- Model: 369FF
- Aircraft type: Rotorcraft
- Category: Rotorcraft
- Engines: 2 · Turbo-shaft
- Seats: 4
- Weight class: 12,500 to 19,999 lb
- Certification: Type certificated
- Data sheet: [TCDS H3WE](https://openairdocs.org/tcds/H3WE) (OpenAirDocs)
- Holder: MD Helicopters LLC
- Registered aircraft: 94
- Page: https://openairdocs.org/model/md-helicopters-369ff

Model codes come from the FAA registry's reference file. ADs are matched to them by model name and maker. The FAA lists this model under more than one registry code, usually for different spellings of the maker. This page covers them all.

## ADs that may apply (OpenAirDocs)

Matched to this model by model name and maker. Each AD's applicability may narrow it by serial number, part number or equipment.

- [AD 2026-21-05](https://openairdocs.org/ad/2026-21-05): Engine/transmission coupling · MD Helicopters 369D, 369E, 369F and 3 more. Effective Nov 27, 2026
- [AD 2026-19-01](https://openairdocs.org/ad/2026-19-01): Rotorcraft flight control · MD Helicopters 369, 369 (Army YOH-6A), 369A and 11 more. Effective Oct 20, 2026
- [AD 2025-17-11](https://openairdocs.org/ad/2025-17-11): tail rotor control system · MD Helicopters 369 (Army YOH-6A), 369A (Army OH-6A), 369D and 9 more. Effective Oct 10, 2025
- [AD 2024-20-07](https://openairdocs.org/ad/2024-20-07): Emergency Equipment; Emergency Flotation Section · Apical Emergency Float Kit, P/N 20498 (STC SR00780LA or 12 others). Effective Dec 5, 2024
- [AD 2023-11-07](https://openairdocs.org/ad/2023-11-07): Ground Proximity System · Airbus Helicopters 47, 206, 210 and 237 more. Effective Jun 22, 2023
- [AD 2021-22-11](https://openairdocs.org/ad/2021-22-11): Tail Rotor Control System · MD Helicopters 369D, 369E, 369F and 7 more. Effective Jan 10, 2022
- [AD 2020-18-20](https://openairdocs.org/ad/2020-18-20): Main Rotor Blade · MD Helicopters 369A, 369D, 369E and 7 more. Effective Oct 28, 2020
- [AD 2020-11-07](https://openairdocs.org/ad/2020-11-07): Main Rotor System · MD Helicopters 369D, 369E, 369FF and 6 more. Effective Jun 30, 2020
- [AD 2019-05-04](https://openairdocs.org/ad/2019-05-04): Main Rotor Blade · MD Helicopters 369A, 369D, 369E and 7 more. Effective Apr 17, 2019
- [AD 2016-05-09](https://openairdocs.org/ad/2016-05-09): Fuel Quantity Indicating System · MD Helicopters 369A, 369D, 369E and 7 more. Effective Apr 15, 2016
- [AD 2016-04-15](https://openairdocs.org/ad/2016-04-15): Main Rotor Blades · MD Helicopters 369A, 369D, 369E and 6 more. Effective Mar 31, 2016
- [AD 2013-19-24](https://openairdocs.org/ad/2013-19-24): Tail Rotor Blades · MD Helicopters 369A, 369D, 369E and 6 more. Effective Dec 5, 2013
- [AD 2013-05-16](https://openairdocs.org/ad/2013-05-16): Tailboom assembly · MD Helicopters 369D, 369E, 369F and 1 more. Effective Apr 30, 2013
- [AD 2008-15-03](https://openairdocs.org/ad/2008-15-03): Tail rotor (T/R) blade abrasion strip · MD Helicopters 369A, 369D, 369E and 6 more. Effective Sep 3, 2008
- [AD 2007-12-23](https://openairdocs.org/ad/2007-12-23): Landing gear fairing support assembly · MD Helicopters 369A, 369D, 369E and 7 more. Effective Jul 19, 2007
- [AD 2007-09-51](https://openairdocs.org/ad/2007-09-51): Tail rotor blade · MD Helicopters 369, 369A, 369D and 7 more. Effective Jul 5, 2007
- [AD 2005-21-02](https://openairdocs.org/ad/2005-21-02): Main rotor blade (blade) · Main rotor blades P/N 500P2300-501/503/505 (Helicopter Technology STC SR01050LA or 2 others). Effective Nov 1, 2005
- [AD 2002-13-05 R1](https://openairdocs.org/ad/2002-13-05-R1): Tail rotor gearbox · Aerometals tailboom, P/N 369X23500-505, 507 (STC SH5055NM or SH4801NM). Effective Feb 25, 2003
- [AD 2000-25-52](https://openairdocs.org/ad/2000-25-52): Main rotor blade · MD Helicopters 369A, 369D, 369E and 6 more. Effective Feb 6, 2001
- [AD 99-20-12](https://openairdocs.org/ad/99-20-12): Bracket P/N 369F5190-1 · MD Helicopters 369D, 369E, 369FF and 2 more. Effective Nov 4, 1999
- [AD 99-08-07](https://openairdocs.org/ad/99-08-07): Engine Control And Warning System · MD Helicopters 369E, 369FF, 500N and 1 more. Effective Apr 21, 1999
- [AD 99-04-12](https://openairdocs.org/ad/99-04-12): Input Shaft Coupling Assembly · MD Helicopters 369D, 369E, 369FF and 3 more. Effective Mar 23, 1999
- [AD 98-21-12](https://openairdocs.org/ad/98-21-12): Overrunning Clutch Retainer Inspection · MD Helicopters 369D, 369E, 369FF and 1 more. Effective Oct 22, 1998
- [AD 98-15-26](https://openairdocs.org/ad/98-15-26): Main Rotor Blade Cracking Inspection · MD Helicopters 369A, 369D, 369E and 8 more. Effective Aug 3, 1998
- [AD 98-07-19](https://openairdocs.org/ad/98-07-19): Tail Rotor Control Rod Assembly · MD Helicopters 369F and 369FF. Effective May 7, 1998
- [AD 98-09-02](https://openairdocs.org/ad/98-09-02): Overrunning Clutch Assembly Outer Race · MD Helicopters 369, 369A, 369D and 8 more. Effective May 6, 1998
- [AD 97-15-08](https://openairdocs.org/ad/97-15-08): Transmission Output Drive Gear · MD Helicopters 369D, 369E, 369F and 2 more. Effective Aug 4, 1997
- [AD 96-10-09](https://openairdocs.org/ad/96-10-09): Blade Root End Crack Inspection · MD Helicopters 369, 369A, 369D and 8 more. Effective May 29, 1996
- [AD 96-08-03](https://openairdocs.org/ad/96-08-03): Hardpoint Assemblies · Hardpoints (Flight Trails Helicopters STC SH6080NM). Effective May 20, 1996
- [AD 95-03-13](https://openairdocs.org/ad/95-03-13): Main Rotor Blade Attach Lugs · MD Helicopters 369, 369A, 369D and 7 more. Effective Mar 21, 1995
- [AD 95-03-11](https://openairdocs.org/ad/95-03-11): Tail Rotor Bade Inspection · MD Helicopters 369, 369A, 369D and 7 more. Effective Mar 1, 1995
- [AD 94-24-04](https://openairdocs.org/ad/94-24-04): Pitch Control Assembly · MD Helicopters 369D, 369E, 369F and 1 more. Effective Dec 13, 1994
- [AD 93-18-05](https://openairdocs.org/ad/93-18-05): Fuel Vent Line · MD Helicopters 369D, 369E, 369F and 2 more. Effective Dec 21, 1993
- [AD 94-18-08](https://openairdocs.org/ad/94-18-08): Tail Rotor Blade Inspection · MD Helicopters 369, 369A, 369D and 7 more. Effective Jan 13, 1992
- [AD 91-08-02](https://openairdocs.org/ad/91-08-02): Tail Rotor Blades · MD Helicopters 369, 369A, 369D and 7 more. Effective May 3, 1991
- [AD 90-24-07](https://openairdocs.org/ad/90-24-07): Main Rotor Transmission Bolts · MD Helicopters 369D, 369E, 369F and 1 more. Effective Dec 10, 1990
- [AD 81-26-01 R1](https://openairdocs.org/ad/81-26-01-R1): Main Rotor Drive Shaft · MD Helicopters 369, 369A, 369D and 7 more. Effective Oct 31, 1990
- [AD 90-19-02](https://openairdocs.org/ad/90-19-02): Clutch Assembly · MD Helicopters 369, 369A, 369D and 7 more. Effective Oct 5, 1990
- [AD 89-02-01 R1](https://openairdocs.org/ad/89-02-01-R1): Main Rotor Blade Strap Assemblies · MD Helicopters 369D, 369E, 369F and 1 more. Effective Jul 19, 1990
- [AD 90-12-03](https://openairdocs.org/ad/90-12-03): Tail Rotor Bearing Assembly · MD Helicopters 369D, 369E, 369F and 1 more. Effective Jun 22, 1990
- [AD 90-01-08](https://openairdocs.org/ad/90-01-08): Driveshaft Coupling · MD Helicopters 369, 369A, 369D and 7 more. Effective Feb 5, 1990
- [AD 88-17-09 R1](https://openairdocs.org/ad/88-17-09-R1): Tail Rotor Transmission · MD Helicopters 369D, 369E, 369F and 1 more. Effective Dec 26, 1989
- [AD 89-23-14](https://openairdocs.org/ad/89-23-14): Main Rotor Collective Tubes · MD Helicopters 369, 369A, 369D and 7 more. Effective Dec 4, 1989
- [AD 87-18-12 R1](https://openairdocs.org/ad/87-18-12-R1): Main Rotor Transmission · MD Helicopters 369D, 369E, 369F and 1 more. Effective Jan 15, 1988
- [AD 87-18-11](https://openairdocs.org/ad/87-18-11): Main Rotor Transmission And Drive Shaft · MD Helicopters 369D, 369E, 369F and 1 more. Effective Sep 1, 1987
- [AD 86-01-04](https://openairdocs.org/ad/86-01-04): Tail Rotor Blades · MD Helicopters 369, 369A, 369D and 7 more. Effective Feb 14, 1986
- [AD 80-08-04](https://openairdocs.org/ad/80-08-04): Auxiliary Fuel System · Chadwick C-20 auxiliary fuel system (Phoenix Air-Atlanta STC SH129WE or SH139WE). Effective Apr 17, 1980

Historical (superseded or no longer in force):

- [AD 2024-23-06](https://openairdocs.org/ad/2024-23-06) (historical): Rotorcraft Flight Control · MD Helicopters 369, 369A, 369D and 11 more. Effective Dec 24, 2024
- [AD 2021-23-13](https://openairdocs.org/ad/2021-23-13) (historical): Ground Proximity System · Airbus Helicopters K-225, K-190A, K-240 and 237 more. Effective Dec 9, 2021
- [AD 2003-08-51](https://openairdocs.org/ad/2003-08-51) (historical): Tail rotor blade pitch horn (pitch horn) · MD Helicopter 369A, 369D, 369E and 6 more. Effective Jul 17, 2003
- [AD 2002-13-05](https://openairdocs.org/ad/2002-13-05) (historical): Tail rotor gearbox · Modification of tailboom attaching hardware (Aerometals STC SH4801NM or SH5055NM). Effective Aug 1, 2002
- [AD 2000-24-51](https://openairdocs.org/ad/2000-24-51) (historical): Blade Spar · MD Helicopter 369A, 369D, 369E and 6 more

## Information bulletins (advisory) (3)

- [SAIB AIR-21-19R1](https://openairdocs.org/saib/AIR-21-19R1): AERIAL TOW EQUIPMENT, Side Pull Hook. Issued Nov 29, 2021
- [SAIB AIR-21-19](https://openairdocs.org/saib/AIR-21-19) (historical): AERIAL TOW EQUIPMENT, Side Pull Hook. Issued Nov 29, 2021
- [SAIB SW-12-45](https://openairdocs.org/saib/SW-12-45): Garmin Model 400W/500W Series GPS-WAAS Navigation System. Issued Oct 3, 2012

## Registered aircraft (94, first 50)

- [N1002X](https://openairdocs.org/aircraft/N1002X): [Md Helicopters LLC](https://openairdocs.org/faa-owner/MD%20HELICOPTERS%20LLC), [Mesa, AZ](https://openairdocs.org/faa-place/AZ/Mesa), S/N 0362FF
- [N1004R](https://openairdocs.org/aircraft/N1004R): [Md Helicopters LLC](https://openairdocs.org/faa-owner/MD%20HELICOPTERS%20LLC), [Mesa, AZ](https://openairdocs.org/faa-place/AZ/Mesa), S/N 0363FF
- [N1005G](https://openairdocs.org/aircraft/N1005G): [Md Helicopters LLC](https://openairdocs.org/faa-owner/MD%20HELICOPTERS%20LLC), [Mesa, AZ](https://openairdocs.org/faa-place/AZ/Mesa), S/N 0364FF
- [N1006C](https://openairdocs.org/aircraft/N1006C): [Md Helicopters LLC](https://openairdocs.org/faa-owner/MD%20HELICOPTERS%20LLC), [Mesa, AZ](https://openairdocs.org/faa-place/AZ/Mesa), S/N 0365FF
- [N1006M](https://openairdocs.org/aircraft/N1006M): [Md Helicopters LLC](https://openairdocs.org/faa-owner/MD%20HELICOPTERS%20LLC), [Mesa, AZ](https://openairdocs.org/faa-place/AZ/Mesa), S/N 0366FF
- [N1006T](https://openairdocs.org/aircraft/N1006T): [Md Helicopters LLC](https://openairdocs.org/faa-owner/MD%20HELICOPTERS%20LLC), [Mesa, AZ](https://openairdocs.org/faa-place/AZ/Mesa), S/N 0367FF
- [N1008H](https://openairdocs.org/aircraft/N1008H): [Md Helicopters LLC](https://openairdocs.org/faa-owner/MD%20HELICOPTERS%20LLC), [Mesa, AZ](https://openairdocs.org/faa-place/AZ/Mesa), S/N 0369FF
- [N102CQ](https://openairdocs.org/aircraft/N102CQ): [Chatham County](https://openairdocs.org/faa-owner/CHATHAM%20COUNTY), [Savannah, GA](https://openairdocs.org/faa-place/GA/Savannah), built 1999, S/N 0901FF
- [N1576F](https://openairdocs.org/aircraft/N1576F): [City Of Houston Police Dept](https://openairdocs.org/faa-owner/CITY%20OF%20HOUSTON%20POLICE%20DEPT), [Houston, TX](https://openairdocs.org/faa-place/TX/Houston), built 2006, S/N 0802FF
- [N1605K](https://openairdocs.org/aircraft/N1605K): [County Of Gwinnett Georgia](https://openairdocs.org/faa-owner/COUNTY%20OF%20GWINNETT%20GEORGIA), [Lawrenceville, GA](https://openairdocs.org/faa-place/GA/Lawrenceville), built 1988, S/N 0604FF
- [N163L](https://openairdocs.org/aircraft/N163L): [Heli Fly Inc Trustee](https://openairdocs.org/faa-owner/HELI%20FLY%20INC%20TRUSTEE), [Wilmington, DE](https://openairdocs.org/faa-place/DE/Wilmington), built 2019, S/N 0317FF
- [N175JK](https://openairdocs.org/aircraft/N175JK): [Jk Aviation LLC](https://openairdocs.org/faa-owner/JK%20AVIATION%20LLC), [Kerman, CA](https://openairdocs.org/faa-place/CA/Kerman), built 2000, S/N 0143FF
- [N1808](https://openairdocs.org/aircraft/N1808): [Gwinnett County Police Dept](https://openairdocs.org/faa-owner/GWINNETT%20COUNTY%20POLICE%20DEPT), [Lawrenceville, GA](https://openairdocs.org/faa-place/GA/Lawrenceville), built 2019, S/N 0318FF
- [N18FF](https://openairdocs.org/aircraft/N18FF): [Heliservice LLC](https://openairdocs.org/faa-owner/HELISERVICE%20LLC), [Wilmington, DE](https://openairdocs.org/faa-place/DE/Wilmington), built 2006, S/N 0146FF
- [N19FF](https://openairdocs.org/aircraft/N19FF): [Heliservice LLC](https://openairdocs.org/faa-owner/HELISERVICE%20LLC), [Wilmington, DE](https://openairdocs.org/faa-place/DE/Wilmington), built 2010, S/N 0718FF
- [N298JW](https://openairdocs.org/aircraft/N298JW): [Heliservice LLC](https://openairdocs.org/faa-owner/HELISERVICE%20LLC), [Wilmington, DE](https://openairdocs.org/faa-place/DE/Wilmington), built 2023, S/N 0342FF
- [N307AP](https://openairdocs.org/aircraft/N307AP): [Mg Holdings LLC](https://openairdocs.org/faa-owner/MG%20HOLDINGS%20LLC), [Alpine, WY](https://openairdocs.org/faa-place/WY/Alpine), built 2020, S/N 0323FF
- [N35002](https://openairdocs.org/aircraft/N35002): [Md Helicopters LLC](https://openairdocs.org/faa-owner/MD%20HELICOPTERS%20LLC), [Mesa, AZ](https://openairdocs.org/faa-place/AZ/Mesa), S/N 0360FF
- [N35006](https://openairdocs.org/aircraft/N35006): [Md Helicopters LLC](https://openairdocs.org/faa-owner/MD%20HELICOPTERS%20LLC), [Mesa, AZ](https://openairdocs.org/faa-place/AZ/Mesa), S/N 0361FF
- [N35011](https://openairdocs.org/aircraft/N35011): [Md Helicopters LLC](https://openairdocs.org/faa-owner/MD%20HELICOPTERS%20LLC), [Mesa, AZ](https://openairdocs.org/faa-place/AZ/Mesa), built 2024, S/N 0350FF
- [N35017](https://openairdocs.org/aircraft/N35017): [Md Helicopters LLC](https://openairdocs.org/faa-owner/MD%20HELICOPTERS%20LLC), [Mesa, AZ](https://openairdocs.org/faa-place/AZ/Mesa), built 2024, S/N 0349FF
- [N35019](https://openairdocs.org/aircraft/N35019): [Usda Aphis Ws Atoc](https://openairdocs.org/faa-owner/USDA%20APHIS%20WS%20ATOC), [Cedar City, UT](https://openairdocs.org/faa-place/UT/Cedar%20City), built 2024, S/N 0348FF
- [N3501D](https://openairdocs.org/aircraft/N3501D): [Md Helicopters LLC](https://openairdocs.org/faa-owner/MD%20HELICOPTERS%20LLC), [Mesa, AZ](https://openairdocs.org/faa-place/AZ/Mesa), built 2026, S/N 0356FF
- [N3501F](https://openairdocs.org/aircraft/N3501F): [Md Helicopters LLC](https://openairdocs.org/faa-owner/MD%20HELICOPTERS%20LLC), [Mesa, AZ](https://openairdocs.org/faa-place/AZ/Mesa), S/N 0359FF
- [N3501L](https://openairdocs.org/aircraft/N3501L): [Md Helicopters LLC](https://openairdocs.org/faa-owner/MD%20HELICOPTERS%20LLC), [Mesa, AZ](https://openairdocs.org/faa-place/AZ/Mesa), S/N 0358FF
- [N3501N](https://openairdocs.org/aircraft/N3501N): [Md Helicopters LLC](https://openairdocs.org/faa-owner/MD%20HELICOPTERS%20LLC), [Mesa, AZ](https://openairdocs.org/faa-place/AZ/Mesa), built 2024, S/N 0339FF
- [N3501Q](https://openairdocs.org/aircraft/N3501Q): [Md Helicopters LLC](https://openairdocs.org/faa-owner/MD%20HELICOPTERS%20LLC), [Mesa, AZ](https://openairdocs.org/faa-place/AZ/Mesa), S/N 0338FF
- [N3501T](https://openairdocs.org/aircraft/N3501T): [Md Helicopters LLC](https://openairdocs.org/faa-owner/MD%20HELICOPTERS%20LLC), [Mesa, AZ](https://openairdocs.org/faa-place/AZ/Mesa), S/N 0354FF
- [N3501V](https://openairdocs.org/aircraft/N3501V): [Md Helicopters LLC](https://openairdocs.org/faa-owner/MD%20HELICOPTERS%20LLC), [Mesa, AZ](https://openairdocs.org/faa-place/AZ/Mesa), built 2024, S/N 0353FF
- [N3501Z](https://openairdocs.org/aircraft/N3501Z): [Md Helicopters LLC](https://openairdocs.org/faa-owner/MD%20HELICOPTERS%20LLC), [Mesa, AZ](https://openairdocs.org/faa-place/AZ/Mesa), built 2024, S/N 0351FF
- [N3502A](https://openairdocs.org/aircraft/N3502A): [Md Helicopters LLC](https://openairdocs.org/faa-owner/MD%20HELICOPTERS%20LLC), [Mesa, AZ](https://openairdocs.org/faa-place/AZ/Mesa), built 2024, S/N 0347FF
- [N3502P](https://openairdocs.org/aircraft/N3502P): [Mccarty David M](https://openairdocs.org/faa-owner/MCCARTY%20DAVID%20M), [Baker City, OR](https://openairdocs.org/faa-place/OR/Baker%20City), built 2023, S/N 0346FF
- [N35KH](https://openairdocs.org/aircraft/N35KH): [Blackbell 22 LLC](https://openairdocs.org/faa-owner/BLACKBELL%2022%20LLC), [Wilmington, DE](https://openairdocs.org/faa-place/DE/Wilmington), built 2024, S/N 0355FF
- [N367PD](https://openairdocs.org/aircraft/N367PD): [City Of Atlanta](https://openairdocs.org/faa-owner/CITY%20OF%20ATLANTA), [Atlanta, GA](https://openairdocs.org/faa-place/GA/Atlanta), built 2023, S/N 0344FF
- [N369FF](https://openairdocs.org/aircraft/N369FF): [Bank Of Utah Trustee](https://openairdocs.org/faa-owner/BANK%20OF%20UTAH%20TRUSTEE), [Salt Lake City, UT](https://openairdocs.org/faa-place/UT/Salt%20Lake%20City), built 2009, S/N 0709FF
- [N369PD](https://openairdocs.org/aircraft/N369PD): [City Of Atlanta](https://openairdocs.org/faa-owner/CITY%20OF%20ATLANTA), [Atlanta, GA](https://openairdocs.org/faa-place/GA/Atlanta), built 2001, S/N 0721FF
- [N369TV](https://openairdocs.org/aircraft/N369TV): [Tennessee Valley Authority](https://openairdocs.org/faa-owner/TENNESSEE%20VALLEY%20AUTHORITY), [Muscle Shoals, AL](https://openairdocs.org/faa-place/AL/Muscle%20Shoals), built 2017, S/N 0269FF
- [N36FG](https://openairdocs.org/aircraft/N36FG): [California Department Of Fish & Wildlife](https://openairdocs.org/faa-owner/CALIFORNIA%20DEPARTMENT%20OF%20FISH%20%26%20WILDLIFE), [Sacramento, CA](https://openairdocs.org/faa-place/CA/Sacramento), built 2020, S/N 0322FF
- [N371PD](https://openairdocs.org/aircraft/N371PD): [City Of Atlanta](https://openairdocs.org/faa-owner/CITY%20OF%20ATLANTA), [Atlanta, GA](https://openairdocs.org/faa-place/GA/Atlanta), built 2023, S/N 0345FF
- [N421SP](https://openairdocs.org/aircraft/N421SP): [Kentucky State Police](https://openairdocs.org/faa-owner/KENTUCKY%20STATE%20POLICE), [Frankfort, KY](https://openairdocs.org/faa-place/KY/Frankfort), built 2008, S/N 0714FF
- [N4RR](https://openairdocs.org/aircraft/N4RR): [Blue Sky Air Services LLC](https://openairdocs.org/faa-owner/BLUE%20SKY%20AIR%20SERVICES%20LLC), [Wilmington, DE](https://openairdocs.org/faa-place/DE/Wilmington), built 2013, S/N 0203FF
- [N500TV](https://openairdocs.org/aircraft/N500TV): [Tennessee Valley Authority](https://openairdocs.org/faa-owner/TENNESSEE%20VALLEY%20AUTHORITY), [Muscle Shoals, AL](https://openairdocs.org/faa-place/AL/Muscle%20Shoals), built 2019, S/N 0320FF
- [N505MP](https://openairdocs.org/aircraft/N505MP): [City Of Mesa Police Dept](https://openairdocs.org/faa-owner/CITY%20OF%20MESA%20POLICE%20DEPT), [Mesa, AZ](https://openairdocs.org/faa-place/AZ/Mesa), built 2001, S/N 0722FF
- [N507MP](https://openairdocs.org/aircraft/N507MP): [Mesa Police Dept](https://openairdocs.org/faa-owner/MESA%20POLICE%20DEPT), [Mesa, AZ](https://openairdocs.org/faa-place/AZ/Mesa), built 2015, S/N 0226FF
- [N520WH](https://openairdocs.org/aircraft/N520WH): [Winco Inc](https://openairdocs.org/faa-owner/WINCO%20INC), [Aurora, OR](https://openairdocs.org/faa-place/OR/Aurora), built 1988, S/N 0607FF
- [N530](https://openairdocs.org/aircraft/N530): [Valiair Lc Trustee](https://openairdocs.org/faa-owner/VALIAIR%20LC%20TRUSTEE), [Casper, WY](https://openairdocs.org/faa-place/WY/Casper), built 2023, S/N 0343FF
- [N530AR](https://openairdocs.org/aircraft/N530AR): [N530mx LLC](https://openairdocs.org/faa-owner/N530MX%20LLC), [Missoula, MT](https://openairdocs.org/faa-place/MT/Missoula), built 2009, S/N 0157FF
- [N530DG](https://openairdocs.org/aircraft/N530DG): [Hlh Leasing LLC](https://openairdocs.org/faa-owner/HLH%20LEASING%20LLC), [Wilmington, DE](https://openairdocs.org/faa-place/DE/Wilmington), S/N 0603FF
- [N530FC](https://openairdocs.org/aircraft/N530FC): [Ferguson And Sons Construction](https://openairdocs.org/faa-owner/FERGUSON%20AND%20SONS%20CONSTRUCTION), [Emmett, ID](https://openairdocs.org/faa-place/ID/Emmett), built 2007, S/N 0712FF
- [N530FM](https://openairdocs.org/aircraft/N530FM): [Gooseneck Inc](https://openairdocs.org/faa-owner/GOOSENECK%20INC), [Heber City, UT](https://openairdocs.org/faa-place/UT/Heber%20City), built 2015, S/N 0253FF

All 94: https://openairdocs.org/model/md-helicopters-369ff/aircraft.md

## NTSB investigations (12)

From the NTSB's public API. Aircraft are matched to registry aircraft by N-number and event date, checked against the reported serial number, make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model.

- [NTSB WPR26FA121](https://openairdocs.org/ntsb/WPR26FA121), Mar 9, 2026: MD Helicopters 369FF (N530XX), Mojave, CA, substantial damage, 1 fatal, investigation ongoing
- [NTSB WPR26FA074](https://openairdocs.org/ntsb/WPR26FA074), Jan 2, 2026: MD Helicopters 369FF (N3502P), Superior, AZ, substantial damage, 4 fatal, investigation ongoing
- [NTSB CEN25LA098](https://openairdocs.org/ntsb/CEN25LA098), Feb 16, 2025: MD Helicopters 369FF (N6100N), Cookville, MO, substantial damage. Probable cause: The pilot’s failure to maintain adequate clearance from a tree during the low altitude operation.
- [NTSB WPR24LA239](https://openairdocs.org/ntsb/WPR24LA239), Jul 9, 2024: Mcdonnell Douglas Helicopter 369 (N540HH), Mesa, AZ, substantial damage. Probable cause: The pilot receiving instruction’s failure to maintain helicopter control during autorotation, which resulted in a dynamic rollover. Contributing to the accident was the delayed remedial action from…
- [NTSB ERA24LA172](https://openairdocs.org/ntsb/ERA24LA172), Apr 9, 2024: MD Helicopters 369FF (N5841Z), Ceiba, PR, substantial damage. Probable cause: The pilots’ failure to ensure adequate clearance from the taxiway while performing a quick stop maneuver.
- [NTSB WPR24LA028](https://openairdocs.org/ntsb/WPR24LA028), Nov 6, 2023: MD Helicopters 369FF (N369FF), Mesa, AZ, substantial damage. Probable cause: The pilot’s failure to maintain a proper autorotation profile during deceleration that resulted in the tail rotor assembly impacting the ground.
- [NTSB CEN22LA402](https://openairdocs.org/ntsb/CEN22LA402), Aug 30, 2022: MD Helicopters 369E (N1576F), Pearland, TX, substantial damage. Probable cause: The pilot receiving instruction’s failure to maintain aircraft control, and the flight instructor’s delayed remedial action, which resulted in a hard landing.
- [NTSB WPR21LA183](https://openairdocs.org/ntsb/WPR21LA183), May 5, 2021: MD Helicopters 369FF (N6068S), Mesa, AZ, substantial damage. Probable cause: A tail rotor blade strike to an undetermined object while practicing approaches to unimproved terrain.
- [NTSB ERA15LA280](https://openairdocs.org/ntsb/ERA15LA280), Jul 24, 2015: MD Helicopter 369FF (N5842Z), Vega Baja, PR, substantial damage. Probable cause: A total loss of engine power due to insufficient lubrication to the engine's No. 2 bearing, which resulted in the failure of the bearing and a subsequent forced landing.
- [NTSB CEN12TA550](https://openairdocs.org/ntsb/CEN12TA550), Aug 16, 2012: MD Helicopter 369 (N551CP), Columbus, OH, substantial damage. Probable cause: The failure of a 4th-stage turbine blade due to high-cycle fatigue, which resulted in the loss of engine power.
- [NTSB ERA09FA419](https://openairdocs.org/ntsb/ERA09FA419), Jul 17, 2009: MD Helicopter 530 (369FF) (N974BW), Camp Butler, Iraq, destroyed, 3 fatal. Probable cause: The pilot’s failure to maintain terrain clearance during a low-level course reversal.
- [NTSB ERA09CA138](https://openairdocs.org/ntsb/ERA09CA138), Jan 20, 2009: MD Helicopter 369E (N369PD), Atlanta, GA, substantial damage. Probable cause: Wind gusts during engine shutdown, which resulted in the main rotor blades contacting the tailboom.

## FAA accident and incident reports (15)

From the FAA Accident/Incident Data System. Reports are matched to registry aircraft by N-number and event date, checked against the reported make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model.

- [Accident 20260309004409A](https://openairdocs.org/incident/20260309004409A), Mar 9, 2026: Md Helicopters MD369FF (N530XX), Mojave, CA, Destroyed, 1 fatal. A helicopter, an [privacy data omitted], was performing operations under a part 133 certificate. The helicopter was pulling power lines to be attached to power…
- [Accident 20260102000049A](https://openairdocs.org/incident/20260102000049A), Jan 2, 2026: Md Helicopters LLC 369FF (N3502P), Superior, AZ, Substantial damage, 4 fatal. On January 2, 2025, a helicopter was on a recreational flight through telegraph canyon near Superior, Arizona, when the helicopter struck a highline/slackline…
- [Incident 20251122016349I](https://openairdocs.org/incident/20251122016349I), Nov 22, 2025: Md Helicopters Inc 369FF (N530TG), Auberry, CA, Minor damage. On November 22, 2025, during a part 91 flight, the aircraft was being relocated from a job site near redlands municipal airport (krei) to a site near Auberry,…
- [Accident 20250216002319A](https://openairdocs.org/incident/20250216002319A), Feb 16, 2025: Md Helicopters Inc 369FF (N6100N), Fort Leonard Wo, MO, Substantial damage. The airman was conducting species eradication operations and performed a low pass over a wooded area before coming to a hover. After establishing the hover,…
- [Accident 20240709008379A](https://openairdocs.org/incident/20240709008379A), Jul 9, 2024: Md Helicopters Inc 369FF (N540HH), Mesa, AZ, Substantial damage. Tuesday, July 09, 2024- iic on duty was notified by the roc of an aircraft accident. Received an FAA form 8020-9 describing in b(5), “due to hard landing acft…
- [Accident 20240409005259A](https://openairdocs.org/incident/20240409005259A), Apr 9, 2024: Md Helicopters Inc 369FF (N5841Z), Ceiba, PR, Substantial damage. On April 9, 2024, at around 1345Z, an MD helicopters [privacy data omitted] sustained substantial damage while practicing rapid deceleration/quick stop…
- [Accident 20220829019759A](https://openairdocs.org/incident/20220829019759A), Aug 29, 2022: Md Helicopters Inc 369E (N1576F), Pearland, TX, Substantial damage. The aircrew operating public use aircraft were performing practice autorotations at night. The pilot had completed two straight in autorotations and one from…
- [Incident 20211208020659I](https://openairdocs.org/incident/20211208020659I), Dec 8, 2021: Md Helicopters Inc 369FF (N551CP), Columbus, OH, Minor damage. Columbus, OH (cmh): cmh city pd, helicopter, cmh city pd Helicopter reported being shot at by at least 20 rounds Approximately 3.5 NM NE of bolton field, OH…
- [Incident 20211102018509I](https://openairdocs.org/incident/20211102018509I), Nov 2, 2021: Md Helicopters Inc 369FF (N18FF), Land O'Lakes, FL, Minor damage. On November 2, 2021, at approximately 0740 EST, N18FF, 2006 MD helicopter?s inc, 369FF,[privacy data omitted], was involved in an incident where the…
- [Accident 20210505002049A](https://openairdocs.org/incident/20210505002049A), May 5, 2021: Md Helicopters Inc 369FF (N6068S), Mesa, AZ, Substantial damage. Training flight departed kffz to the training area (13 NM on a 018 degree heading) at sycamore creek. Terrain flight approaches were performed to the sandy…
- [Accident 20150724015779A](https://openairdocs.org/incident/20150724015779A), Jul 24, 2015: Md Helicopters Inc 369FF (N5842Z), Vega Baja, PR, Substantial damage. The flight departed from luis muÑoz marin international airport (sju) to a facility in arecibo, PR. While enroute at 300FT in the vicinity of cerro gordo, Vega…
- [Accident 20120816017519A](https://openairdocs.org/incident/20120816017519A), Aug 16, 2012: Md Helicopters Inc 369E (N551CP), Columbus, OH, Substantial damage. At approximately 1:50AM, after a pre-flight inspection of the aircraft and a check of the weather, the aircraft departed the Columbus police heliport, located…
- [Incident 20101015048279I](https://openairdocs.org/incident/20101015048279I), Oct 15, 2010: Md Helicopt 369FF (N5841Z), Utuado, PR, Substantial damage. During flight pilot reported a strong sound coming from tail rotor and after that tail rotor vibration. Pilot did a precautionary landing in an open field.
- [Incident 20090120013279I](https://openairdocs.org/incident/20090120013279I), Jan 20, 2009: Hughes 369E (N369PD), Atlanta, GA, Substantial damage. This is a public aircraft. During engine shutdown, a gust of wind caused 3 of the 4 rotor blades on the aircraft to contace the upper tailboom causing…
- [Incident 20070627017979I](https://openairdocs.org/incident/20070627017979I), Jun 27, 2007: Hughes 369FF (N5841Z), Rio Grande, Puerto Rico, Minor damage. (-23) Pilot conducted low level power line patrolling. Over mountainous area while cruising at 30 KTS pilot encountered an old 13,000 volts line that was…

## Service difficulty reports (25)

As reported by operators and repair stations, by the model named in the report.

- [SDR 2024FA0000675](https://openairdocs.org/sdr/2024FA0000675), Aug 29, 2024: BEARING RACE. UNSERVICEABLE. OVERRUNNING CLUTCH INNER RACE PN-369F5455-1 FAILED MD HELICOPTER CSP-COM5 CH 63-10-15 TABLE 502 NDT TESTING.
- [SDR 2023FA0000571](https://openairdocs.org/sdr/2023FA0000571), Sep 14, 2023: FUEL CELL. ABNORMAL. PMA REPLACEMENT FUEL CELL IS CAUSING FUEL TO TURN GREEN. FUEL WAS SENT OUT TO A LAB TO BE TESTED AND TESTS WERE INCONCLUSIVE AS TO THE SUBSTANCE BUT IT IS SUSPE
- [SDR 2022F00465](https://openairdocs.org/sdr/2022F00465), Nov 2, 2022: HOOK. FAILED. DURING SIDE PULL OPERATIONS, THE SIDE PULL HOOK SHAFT ASSEMBLY SHEARED IN HALF AND DEPARTED THE AIRCRAFT. VISUAL INSPECTIONS INDICATE METALLURGY ISSUES IN THE A
- [SDR 2020FA0000167](https://openairdocs.org/sdr/2020FA0000167), Aug 11, 2021: FUEL CELL. LEAKING. LEFT FUEL CELL DEVELOPED LEAK DUE TO RUBBING WITH VERTICAL SUPPORTS AT CENTER BEAM STRUCTURE. INSTALLED ANTI-CHAFF TAPE TO ALL VERTICAL STIFFENERS. REPLACED FUE
- [SDR DXMR20200219163](https://openairdocs.org/sdr/DXMR20200219163), Mar 4, 2019: BEARING. SEIZED. DURING EXTREME COLD WEATHER, SWASHPLATE UNIBALL SEIZED ON M/R DRIVESHAFT CAUSING STIFF COLLECTIVE FORCES.
- [SDR H44R2016051300001](https://openairdocs.org/sdr/H44R2016051300001), May 11, 2016: COVER PLATE. WORN. DURING REPLACEMENT OF THE OVER RUNNING CLUTCH, A SPECIAL TOOL IS REQUIRED TO TORQUE THE INTERNAL WRENCHED RETENTION NUT INSIDE THE PTO SHAFT OF THE ENGINE. WHEN
- [SDR 2016FA0000011](https://openairdocs.org/sdr/2016FA0000011), Dec 30, 2015: ANGLE. CRACKED. THE ANGLE HAS CRACKED ON ALL OF OUR ACFT. THE ANGLE IS RIVETED AND SCREWED INTO PLACE DIRECTLY BEHIND THE LOWER LT ENGINE MOUNT. CAUSE OF THE CRACK IS UNKNOWN, 
- [SDR H44R2015082700001](https://openairdocs.org/sdr/H44R2015082700001), Aug 21, 2015: FAIRING. FAILED. CUSTOMER BROUGHT ACFT IN FOR ACCOMPLISHMENT OF REPETITIVE SB. DURING ACCOMPLISHMENT OF PRELIMINARY INSPECTION, NOTED ROTOR HUB FAIRING BROKEN OFF. PILOT RECALLE
- [SDR DXMR202002190164](https://openairdocs.org/sdr/DXMR202002190164), Apr 29, 2015: SENDING UNIT. INACCURATE. REPLACED FUEL QUANTITY SENDING UNIT, SN 2366 TT THIS UNIT 447.3 HOURS, INSTALLED 31 OCT 2014. SINCE NEW SENDER WAS SHOWING HIGHER FUEL LEVELS THAN AVAILABLE IN 
- [SDR CA090606001](https://openairdocs.org/sdr/CA090606001), Jun 5, 2009: ELT. CRACKED. (CAN) SENT IN ELT FOR IT`S ANNUAL RECERTIFICATION. REMOVABLE COVER WAS BROKEN OUT AND THE MAIN CASE WAS CRACKED IN SEVERAL LOCATIONS. THIS UNIT HAND NOT BEEN DR
- [SDR P4YA2009032500001](https://openairdocs.org/sdr/P4YA2009032500001), Mar 25, 2009: SUPPORT BRACKET. CRACKED. WHILE PERFORMING A FLIGHT CONTROL CHECK, PILOT PUSHED ON BOTH RUDDER PEDALS FIRMLY AND THE PEDAL BRACKET SUPPORT BROKE.
- [SDR 2009FA0000022](https://openairdocs.org/sdr/2009FA0000022), Oct 27, 2008: NUT. BACKED OUT. OIL COOLER BLOWER DRIVEN PULLEY RETAINING NUT IS BACKING OFF OF SHAFT DURING NORMAL USE. NUT IS A STAINLESS STEEL, SILVER PLATED, ALL METAL SELF LOCKING TYPE NU
- [SDR 2008FA0000741](https://openairdocs.org/sdr/2008FA0000741), Oct 26, 2008: NUT. BACKED OUT. OIL COOLER BLOWER DRIVEN PULLEY RETAINING NUT IS BACKING OFF OF SHAFT DURING NORMAL US. NUT IS A STAINLESS STEEL, SILVER PLATED, ALL METAL SELF LOCKING TYPE NUT
- [SDR 2007FA0000630](https://openairdocs.org/sdr/2007FA0000630), May 24, 2007: BLOWER. DAMAGED. OIL COOLER BLOWER APPEARS TO BE FOD`D OUT. ONE BLADE WAS FOUND ENABLED IN THE HOUSING. THE OUT OF BALANCE SITUATION BROKE ALL (4) BEARING CARRIER LEGS. DAMAGED 
- [SDR FNH2006F00000](https://openairdocs.org/sdr/FNH2006F00000), Nov 3, 2006: GOVERNOR. MALFUNCTIONED. ENGINE GOVERNOR DROPPED TO BETWEEN 90 PERCENT TO 95 PERCENT N2 IN CRUISE FLIGHT, MADE PRECAUTIONARY LANDING ON BEACH. INSPECTED GOVERNOR LINKAGE, AND PNEUMATIC 
- [SDR 2003FA0001049](https://openairdocs.org/sdr/2003FA0001049), Sep 28, 2003: EXHAUST STACK. CRACKED. THE EXHAUST STACK HAD TO BE REPAIRED SEVERAL TIMES SINCE 400.0 HOURS SINCE NEW. NOW THE AC HAS 1627.3 HOURS TT. SERVICE REPORTS WAS DONE TO MFG SINCE 12-2000. I
- [SDR 2003FA0001062](https://openairdocs.org/sdr/2003FA0001062), Sep 24, 2003: EXHAUST STACK. CRACKED. THE EXHAUST STACK HAD TO BE REPAIRED SEVERAL TIMES SINCE 400.0 HOURS SINCE NEW. NOW THE HELICOPTER HAS 1568.2 HOURS TAT. IN 3 OCCASIONS THE MFG SENT THE EXHAUST
- [SDR OMNIDMR04](https://openairdocs.org/sdr/OMNIDMR04), Dec 14, 2001: STRUCTURE. CRACKED. HORIZONTAL STABILIZER CRACKED ON TRAILING EDGE ABD TRAIM TAB CRACKED ON LEADING EDGE DUE TO EXCESSIVE FLUTTER. CRACKING IS CONCENTRATED AROUND AREA OF DAMPER WE
- [SDR CA010504004](https://openairdocs.org/sdr/CA010504004), Apr 19, 2001: SHAFT. BROKEN. (CAN) - METAL GENERATION, SCHEDULED 100 HOUR INSPECTION.- GEARBOX REMOVED AND SENT FOR REPAIR. - TEARDOWN INSPECTION FOUND THAT THE INPUT GEARSHAFT HAD FAILED I
- [SDR 20010511CW007](https://openairdocs.org/sdr/20010511CW007), Apr 19, 2001: GEARBOX. FAILED. UPON SHUT DOWN, THE PILOT AND MECH NOTICE AN ODD NOISE COMING FROM THE TAIR ROTOR ACCOMPANIED BY A SLIGHT VIBRATION. AIRCRAFT WAS DUE FOR A 100 HR INSPECTION, S
- [SDR CA010921004](https://openairdocs.org/sdr/CA010921004), Jul 26, 2000: BOLT. BROKEN. (CAN) - TAILROTOR GEARBOX RETENTION HARDWARE, BOLT HEAD FOUND MISSING DURING SCHEDULED MAINTENANCE. - 3 REMAINING BOLTS WERE INSPECTED WITH NO FAILURES FOUND. A
- [SDR CA000110001](https://openairdocs.org/sdr/CA000110001), Nov 1, 1999: BEARING. MAKING METAL. (CAN) INPUT ALIGNMENT BEARING MAKING METAL. GEARBOX STRIPPED TO DETERMINE CAUSE OF PROBLEM.(CHIP LLTE IN FLIGHT)
- [SDR CA000110003](https://openairdocs.org/sdr/CA000110003), Oct 12, 1999: BEARING. MAKING METAL. (CAN) INPUT ALIGNMENT BEARING MAKING METAL (CHIP LITE IN CRUISE. GEARBOX STRIPPEDTO DETERMINE CAUSE OF METAL GENERATION.
- [SDR CA961216004](https://openairdocs.org/sdr/CA961216004), Nov 20, 1996: DRIVESHAFT. TEETH MISSING. (CAN) MAIN DRIVESHAFT INSPECTED DURING 300 HOUR INSPECTION. 7 OUT OF 34 TEETH ON OUTPUT SPLINE TO MAIN TRANSMISSION FOUND CRACKED.
- [SDR 95ZZZX3923](https://openairdocs.org/sdr/95ZZZX3923), Jun 30, 1995: WINDOW. DEPARTED. THE SLIDE IN THE PILOT'S WINDOW DEPARTED THE HELICOPTER WHEN THE PILOT TRIED TO CLOSE THE WINDOW IN FORWARD FLIGHT. THE PILOT STATED HE BARELY TOUCHED THE SLIDE

## STCs that may be installed (OpenAirDocs) (203, first 50)

Approved for this model: the STC's model list names it on its data sheet, or a series that includes it. In force first, then newest. The registry doesn't record which STCs an aircraft has.

- [STC SA800EA](https://openairdocs.org/stc/SA800EA): Installation of Whelen Anti-Collision, Position, or Anti-Collision/Position Light System, and applicable associated power supplies. Whelen Aerospace Technologies
- [STC SR01050LA](https://openairdocs.org/stc/SR01050LA): Installation of main rotor blades P/N 500P2300-501/503/505. Helicopter Technology Company
- [STC SR01059LA](https://openairdocs.org/stc/SR01059LA): Installation of right side dual utility mount. Airfilm Camera Systems LLC
- [STC SH133WE](https://openairdocs.org/stc/SH133WE): Installation of C-75 cargo rack set. Isolair Inc
- [STC SH3686NM](https://openairdocs.org/stc/SH3686NM): Installation of an Isolair Model3700-110 spray tank system. (500N restricted category). Isolair Inc
- [STC SR01106DE](https://openairdocs.org/stc/SR01106DE): Installation of Crash Resistant Auxiliary Fuel Tank i. Aerospace Composites Solutions Inc
- [STC SR00181IB](https://openairdocs.org/stc/SR00181IB): Installation of alternate Cabin Door Latches to replace OEM door locks. Aerologic LLC
- [STC SR00709AT](https://openairdocs.org/stc/SR00709AT): Installation of Starter-Generator Cooling Kit. Precision Heli-Support LLC. Lists 369 Series
- [STC SR00771LA](https://openairdocs.org/stc/SR00771LA): Installation of right-side utility mount. Airfilm Camera Systems LLC
- [STC SR00772LA](https://openairdocs.org/stc/SR00772LA): Installation of left-side utility mount. Airfilm Camera Systems LLC
- [STC SR00862LA](https://openairdocs.org/stc/SR00862LA): Installation of aft belly utility mount. Airfilm Camera Systems LLC
- [STC SR04637CH](https://openairdocs.org/stc/SR04637CH): Replacement of existing main ship battery with Lithium Ion Battery and installation of Annunciator Control Panel. Airwolf Aerospace LLC
- [STC SR00068DE](https://openairdocs.org/stc/SR00068DE): Installation of infrared imaging system. Dart Aerospace Company
- [STC SH5247NM](https://openairdocs.org/stc/SH5247NM): Installation of external pod, camera mount, and 12 volt power provision. Dart Aerospace USA Inc
- [STC SR00146IB](https://openairdocs.org/stc/SR00146IB): nstallation of the Integrated Health and Usage Monitoring System (HUMS). RMCI Canada Inc
- [STC SR02120SE](https://openairdocs.org/stc/SR02120SE): Installation of Garmin GTN 6XX/7XX Navigation System. Garmin International Inc
- [STC SH2735NM](https://openairdocs.org/stc/SH2735NM): Installation of pneumatic door actuators. Dart Aerospace USA Inc
- [STC SR02808LA](https://openairdocs.org/stc/SR02808LA): Installation of MD500 Side Pull Kit. Aerocraft Incorporated
- [STC SH5206NM](https://openairdocs.org/stc/SH5206NM): Installation of two underfuselage jacking hard points. Dart Aerospace USA Inc
- [STC SR00376DE](https://openairdocs.org/stc/SR00376DE): Installation of laser mapping system. Dart Aerospace USA Inc
- [STC SR04160CH](https://openairdocs.org/stc/SR04160CH): Installation of Heli-Preheat Kit, p/n TA3089-1 for 115 volt application. HARTZELL PROPELLER INC
- [STC SR00043LA](https://openairdocs.org/stc/SR00043LA): Installation of clip on Main Rotor Swashplate. Pac West Helicopters Inc
- [STC SH3319NM](https://openairdocs.org/stc/SH3319NM): Installation of Precise Flight Pulselite Control Unit in the Landing /Taxi Recognition Visual Control Light system,. Precise Flight Inc
- [STC SR01778SE](https://openairdocs.org/stc/SR01778SE): Installation of Onboard Systems International Cargo Hook Kits and Load Weigh Kit. Onboard Systems International LLC
- [STC SH2262NM](https://openairdocs.org/stc/SH2262NM): Installation of a fore-and-aft medical evacuation litter(s) kit. MD Helicopters LLC
- [STC SR00902DE](https://openairdocs.org/stc/SR00902DE): Installation of External Equipment Mounts for provisions. MD Helicopters Inc
- [STC SR00923DE](https://openairdocs.org/stc/SR00923DE): Installation of Genesys AeroSystems Avionics Display Upgrade. MD Helicopters Inc
- [STC SR04680NY](https://openairdocs.org/stc/SR04680NY): Installation of Human External Cargo (HEC) Long-Line Kit. Boost Human External Cargo Systems Inc
- [STC SR00314AT](https://openairdocs.org/stc/SR00314AT): Installation of engine firewall in Hughes 369 model helicopter. Thoroughbred Aviation Maintenance Inc
- [STC SR00450AT](https://openairdocs.org/stc/SR00450AT): Installation of a seat pan inspection panel. Thoroughbred Aviation Maintenance Inc. Lists 369 Series
- [STC SR00829AT](https://openairdocs.org/stc/SR00829AT): Installation of front extended cabin step. Thoroughbred Aviation Maintenance Inc. Lists 369 Series
- [STC SR01839AT](https://openairdocs.org/stc/SR01839AT): Installation of cyclic friction levers. Thoroughbred Aviation Maintenance Inc
- [STC SR02859AT](https://openairdocs.org/stc/SR02859AT): Installation of Part Number 369HT21004 main rotor hub fairing as a direct replacement for OEM Part Number 369D21004-11 (BSC). Thoroughbred Aviation Maintenance Inc
- [STC SR04175AT](https://openairdocs.org/stc/SR04175AT): Installation of the HT400 Inspection Panel Kit. Thoroughbred Aviation Maintenance Inc
- [STC SR02693LA](https://openairdocs.org/stc/SR02693LA): Installation of a redundant system for the primary Cargo Hook system when conducting Human External Cargo (HEC) external loads operations. Onboard Systems International LLC
- [STC SH4908NM](https://openairdocs.org/stc/SH4908NM): Fabrication of Onboard Systems Model 200-034-00, 200-034-01, and 200-034-02 Load Weigh Kits. Onboard Systems International
- [STC SR00407SE](https://openairdocs.org/stc/SR00407SE): Fabrication of Onboard Systems Model 200-187-00 cargo hook kit. Onboard Systems International LLC
- [STC SR00525SE](https://openairdocs.org/stc/SR00525SE): Fabrication of Onboard Systems Model 200-231-00 and 200-231-01 Cargo Hook Attach Point Kit and installation of these Cargo Hook Attach Point Kits. Onboard Systems International
- [STC SR00892SE](https://openairdocs.org/stc/SR00892SE): Fabrication of Onboard Systems International Model 200-264-00, 200-264-01, and 200-264-02 Cargo Hook Kits. Onboard Systems International
- [STC SR02001SE](https://openairdocs.org/stc/SR02001SE): Fabrication and installation of Model 72448 locking fuel cover assembly. Timberline Aerospace LLC
- [STC SR02713SE](https://openairdocs.org/stc/SR02713SE): Manufacture and Installation of Human External Cargo (HEC) Hook System. Mechanical Specialties Inc
- [STC SR02704SE](https://openairdocs.org/stc/SR02704SE): Installation and maintenance of the Sunspot 36 and 46 series lights. AeroLED's Holdings LLC
- [STC SR01343NY](https://openairdocs.org/stc/SR01343NY): Installation of main rotor blade tie down tips. VIH Aerospace Inc
- [STC SR04539NY](https://openairdocs.org/stc/SR04539NY): Installation of the Human External Cargo (HEC) System. Boost Human External Cargo Systems Inc
- [STC SR02622SE](https://openairdocs.org/stc/SR02622SE): Installation of Garmin G500H TXi Display System (Primary Flight Display (PDF), Multi-Function Display (MFD)). Garmin International Inc
- [STC SR02712LA](https://openairdocs.org/stc/SR02712LA): Installation of Torque Indicating Systems. Precision Heli-Support LLC
- [STC SR02124SE](https://openairdocs.org/stc/SR02124SE): Installation functionality. of Data Garmin Required: transponders: (1) Garmin GTX Master 345/345R Drawing with List ADS-B (MDL), Out and In 005-00734-A4, functionality;. Garmin International Inc
- [STC SH656GL](https://openairdocs.org/stc/SH656GL): Installation of auxiliary fuel system. Fargo Manufacturing Co
- [STC SH908GL](https://openairdocs.org/stc/SH908GL): Installation of air conditioning system. Fargo Manufacturing Co
- [STC SH994GL](https://openairdocs.org/stc/SH994GL): Installation of belly-mounted, cargo carrier. Fargo Manufacturing Co

All 203: https://openairdocs.org/model/md-helicopters-369ff/stcs.md

## The same model under other registry codes

Amateur-built copies and renamed makers get their own codes.

- [Mcdonnell Douglas Heli 369FF](https://openairdocs.org/model/mcdonnell-douglas-heli-369ff): 17 registered aircraft, registry code 3027371
- [Hughes Helicopters 369FF](https://openairdocs.org/model/hughes-helicopters-369ff): 5 registered aircraft, registry code 4470709

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