# Allison 250-C20

- Type: Engine model (FAA registry)
- Registry code: 03080
- Manufacturer (registry): ALLISON
- Model: 250-C20
- Engine type: Turbo-shaft
- Power: 400 hp
- Data sheet: [TCDS E4CE](https://openairdocs.org/tcds/E4CE) (OpenAirDocs)
- Holder: Rolls-Royce Corporation
- Installed in: 54 registered aircraft
- Page: https://openairdocs.org/engine/allison-250-c20

Model codes come from the FAA registry's reference file.

## ADs that may apply (OpenAirDocs)

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

- [AD 2022-10-06](https://openairdocs.org/ad/2022-10-06): Turbine Section · Rolls-Royce 250-C20, 250-C20B, 250-C20C (T63-A-720) and 9 more. Effective Jun 28, 2022
- [AD 2018-13-01](https://openairdocs.org/ad/2018-13-01): Turbine Governor · Rolls-Royce 250-C10 (T63-A-5), 250-C18, 250-C18A and 24 more. Effective Aug 16, 2018
- [AD 2006-16-04](https://openairdocs.org/ad/2006-16-04): Inspection of the fuel nozzle screen · Rolls-Royce 250-B15A, 250-B15E, 250-B15G and 43 more. Effective Sep 7, 2006
- [AD 2006-13-06](https://openairdocs.org/ad/2006-13-06): Gas producer rotor assembly tie bolts · Rolls-Royce 250-B17, 250-B17B, 250-B17C and 16 more. Effective Jul 26, 2006
- [AD 2005-10-13](https://openairdocs.org/ad/2005-10-13): Turbine energy absorbing ring · Rolls-Royce 250-B17B, 250-B17C, 250-B17D and 7 more. Effective Jun 22, 2005
- [AD 2004-26-09](https://openairdocs.org/ad/2004-26-09): Compressor Adaptor Couplings · Rolls-Royce 250-B17, 250-B17B, 250-B17C and 8 more. Effective Feb 8, 2005
- [AD 2001-24-12](https://openairdocs.org/ad/2001-24-12): Helical Torquemeter Gearshaft Assembly · Rolls-Royce 250-B17, 250-B17C, 250-B17D and 13 more. Effective Dec 19, 2001
- [AD 98-24-28](https://openairdocs.org/ad/98-24-28): Main Fuel Control Bellows · Rolls-Royce 250-B15A, 250-B15E, 250-B15G and 36 more. Effective Jan 7, 1999
- [AD 96-19-01](https://openairdocs.org/ad/96-19-01): Superior Air Parts Manufacture Approval (PMA) Bearings · Rolls-Royce 250-B15G, 250-B17F, 250-B17F/1 and 17 more. Effective Sep 26, 1996
- [AD 88-17-01](https://openairdocs.org/ad/88-17-01): Fuel Controls · Rolls-Royce 250-B17, 250-B17B, 250-B17C and 26 more. Effective Mar 1, 1989
- [AD 83-03-02 R1](https://openairdocs.org/ad/83-03-02-R1): Slotted Third Stage Turbine Wheels · Rolls-Royce 250-B17, 250-B17B, 250-B17C and 5 more. Effective Feb 28, 1984
- [AD 82-24-05](https://openairdocs.org/ad/82-24-05): Control Assembly and Power Turbine Governor Assembly · Rolls-Royce 250-B15A, 250-B15E, 250-B15G and 43 more. Effective Nov 26, 1982
- [AD 82-13-03](https://openairdocs.org/ad/82-13-03): Modify Engine High Pressure Fuel Control Filter Assembly · Rolls-Royce 250-C20 and 250-C20B. Effective Jul 1, 1982
- [AD 79-21-01 R1](https://openairdocs.org/ad/79-21-01-R1): Third Stage Turbine Wheel Blade · Rolls-Royce 250-B17, 250-B17B, 250-B17C and 3 more. Effective Jun 3, 1981
- [AD 78-14-08](https://openairdocs.org/ad/78-14-08): Fuel Pump Drive Spline · Rolls-Royce 250-C18, 250-C18A, 250-C18B and 3 more. Effective Oct 24, 1979
- [AD 77-15-12](https://openairdocs.org/ad/77-15-12): Power Turbine Coupling Nut · Rolls-Royce 250-B15A, 250-B15E, 250-B15G and 23 more. Effective Sep 23, 1977
- [AD 77-09-08](https://openairdocs.org/ad/77-09-08): Bleed Valve Diaphragm · Rolls-Royce 250-B17, 250-B17B, 250-C20 and 2 more. Effective Jul 18, 1977
- [AD 74-14-03](https://openairdocs.org/ad/74-14-03): Fuel Control Rigging · Rolls-Royce 250-C20. Effective Jul 10, 1974
- [AD 73-19-07](https://openairdocs.org/ad/73-19-07): Turbine Governor-To-Fuel Control Tube · Rolls-Royce 250-C20. Effective Sep 14, 1973
- [AD 72-03-06](https://openairdocs.org/ad/72-03-06): Turbine Wheels · Rolls-Royce 250-B15A, 250-B15E, 250-B15G and 9 more. Effective Feb 8, 1972

Historical (superseded or no longer in force):

- [AD 2017-18-14](https://openairdocs.org/ad/2017-18-14) (historical): Turbine Section · Rolls-Royce 250-C20, 250-C20B, 250-C20F and 8 more. Effective Oct 13, 2017
- [AD 2015-02-22](https://openairdocs.org/ad/2015-02-22) (historical): Repetitive visual inspections · Rolls-Royce 250-B17, 250-B17B, 250-B17C and 15 more. Effective Mar 9, 2015
- [AD 2012-14-06](https://openairdocs.org/ad/2012-14-06) (historical): Released turbine blades and shrouds · Rolls-Royce 250-C20, 250-C20B and 250-C20R/2. Effective Aug 14, 2012
- [AD 2004-24-09](https://openairdocs.org/ad/2004-24-09) (historical): Fuel nozzle · Rolls-Royce 250-B15A, 250-B15E, 250-B15G and 40 more. Effective Jan 5, 2005
- [AD 2001-20-51](https://openairdocs.org/ad/2001-20-51) (historical): Helical Torquemeter Gearshaft Assembly · 250-B17, 250-B17C, 250-B17D and 12 more

## Information bulletins (advisory) (1)

- [SAIB CE-01-10](https://openairdocs.org/saib/CE-01-10): . Issued Jan 24, 2001

## Registered aircraft (54, first 50)

- [N101DG](https://openairdocs.org/aircraft/N101DG): [Summit Helicopters Inc](https://openairdocs.org/faa-owner/SUMMIT%20HELICOPTERS%20INC), [Salem, VA](https://openairdocs.org/faa-place/VA/Salem), built 1986, S/N 3929
- [N106JC](https://openairdocs.org/aircraft/N106JC): [Trans Peco Aviation LLC](https://openairdocs.org/faa-owner/TRANS%20PECO%20AVIATION%20LLC), [Fort Stockton, TX](https://openairdocs.org/faa-place/TX/Fort%20Stockton), built 1982, S/N 3622
- [N111HF](https://openairdocs.org/aircraft/N111HF): [Plane Fun Inc Tr Trustee](https://openairdocs.org/faa-owner/PLANE%20FUN%20INC%20TR%20TRUSTEE), [Snellville, GA](https://openairdocs.org/faa-place/GA/Snellville), built 1968, S/N 208
- [N122J](https://openairdocs.org/aircraft/N122J): [Lotus Aviation LLC](https://openairdocs.org/faa-owner/LOTUS%20AVIATION%20LLC), [Boring, OR](https://openairdocs.org/faa-place/OR/Boring), built 1976, S/N 2035
- [N14837](https://openairdocs.org/aircraft/N14837): [Oscar Aerial Spraying LLC](https://openairdocs.org/faa-owner/OSCAR%20AERIAL%20SPRAYING%20LLC), [Grady, OK](https://openairdocs.org/faa-place/OK/Grady), built 1972, S/N 850
- [N16EY](https://openairdocs.org/aircraft/N16EY): [Carleton Inc Trustee](https://openairdocs.org/faa-owner/CARLETON%20INC%20TRUSTEE), [Wilmington, DE](https://openairdocs.org/faa-place/DE/Wilmington), built 1992, S/N 0501E
- [N170SS](https://openairdocs.org/aircraft/N170SS): [Olathe Spray Service Inc](https://openairdocs.org/faa-owner/OLATHE%20SPRAY%20SERVICE%20INC), [Olathe, CO](https://openairdocs.org/faa-place/CO/Olathe), built 1963, S/N 2827
- [N200VB](https://openairdocs.org/aircraft/N200VB): [Vertical Vegetation Management LLC](https://openairdocs.org/faa-owner/VERTICAL%20VEGETATION%20MANAGEMENT%20LLC), [Darlington, IN](https://openairdocs.org/faa-place/IN/Darlington), built 1989, S/N 4070
- [N206DD](https://openairdocs.org/aircraft/N206DD): [International Air Services Inc Trustee](https://openairdocs.org/faa-owner/INTERNATIONAL%20AIR%20SERVICES%20INC%20TRUSTEE), [Carson City, NV](https://openairdocs.org/faa-place/NV/Carson%20City), built 1982, S/N 3627
- [N206NA](https://openairdocs.org/aircraft/N206NA): [International Air Services Inc Trustee](https://openairdocs.org/faa-owner/INTERNATIONAL%20AIR%20SERVICES%20INC%20TRUSTEE), [Carson City, NV](https://openairdocs.org/faa-place/NV/Carson%20City), built 1972, S/N 708
- [N222HA](https://openairdocs.org/aircraft/N222HA): [Jasons Helicopter Services](https://openairdocs.org/faa-owner/JASONS%20HELICOPTER%20SERVICES), [New Prague, MN](https://openairdocs.org/faa-place/MN/New%20Prague), built 1974, S/N 1316
- [N224KM](https://openairdocs.org/aircraft/N224KM): [Statzel Steve DBA](https://openairdocs.org/faa-owner/STATZEL%20STEVE%20DBA), [New Haven, MO](https://openairdocs.org/faa-place/MO/New%20Haven), S/N 1124
- [N2295F](https://openairdocs.org/aircraft/N2295F): [Norgrain Helicopters LLC](https://openairdocs.org/faa-owner/NORGRAIN%20HELICOPTERS%20LLC), [Hattiesburg, MS](https://openairdocs.org/faa-place/MS/Hattiesburg), built 1982, S/N 3579
- [N2297E](https://openairdocs.org/aircraft/N2297E): [Westwind Helicopters Inc](https://openairdocs.org/faa-owner/WESTWIND%20HELICOPTERS%20INC), [Santa Fe, TX](https://openairdocs.org/faa-place/TX/Santa%20Fe), built 1982, S/N 3656
- [N2751A](https://openairdocs.org/aircraft/N2751A): [Collective Aviation Services](https://openairdocs.org/faa-owner/COLLECTIVE%20AVIATION%20SERVICES), [Orient, IA](https://openairdocs.org/faa-place/IA/Orient), built 1979, S/N 2623
- [N283XL](https://openairdocs.org/aircraft/N283XL): [Thiel Air Care Inc](https://openairdocs.org/faa-owner/THIEL%20AIR%20CARE%20INC), [Chowchilla, CA](https://openairdocs.org/faa-place/CA/Chowchilla), built 1971, S/N 715
- [N3051Q](https://openairdocs.org/aircraft/N3051Q): [Charlie Helicopter Company LLC](https://openairdocs.org/faa-owner/CHARLIE%20HELICOPTER%20COMPANY%20LLC), [Sierra Blanca, TX](https://openairdocs.org/faa-place/TX/Sierra%20Blanca), built 1974, S/N 540601S
- [N3192G](https://openairdocs.org/aircraft/N3192G): [3192 Golf Inc](https://openairdocs.org/faa-owner/3192%20GOLF%20INC), [Wauchula, FL](https://openairdocs.org/faa-place/FL/Wauchula), built 1972, S/N 809
- [N32KY](https://openairdocs.org/aircraft/N32KY): [English Air Service LLC](https://openairdocs.org/faa-owner/ENGLISH%20AIR%20SERVICE%20LLC), [Santa Maria, CA](https://openairdocs.org/faa-place/CA/Santa%20Maria), built 1979, S/N 2875
- [N346ER](https://openairdocs.org/aircraft/N346ER): [Cibaoair Aviation Group Inc](https://openairdocs.org/faa-owner/CIBAOAIR%20AVIATION%20GROUP%20INC), [Middletown, DE](https://openairdocs.org/faa-place/DE/Middletown), built 1995, S/N 4337
- [N355TH](https://openairdocs.org/aircraft/N355TH): [Timberland Helicopters Inc](https://openairdocs.org/faa-owner/TIMBERLAND%20HELICOPTERS%20INC), [Ashland, OR](https://openairdocs.org/faa-place/OR/Ashland), built 1981, S/N 5111
- [N369HS](https://openairdocs.org/aircraft/N369HS): [Purcell Ian](https://openairdocs.org/faa-owner/PURCELL%20IAN), [San Diego, CA](https://openairdocs.org/faa-place/CA/San%20Diego), built 1976, S/N 850763S
- [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
- [N4042G](https://openairdocs.org/aircraft/N4042G): [Klein Flying Service Inc](https://openairdocs.org/faa-owner/KLEIN%20FLYING%20SERVICE%20INC), [Lawrenceville, IL](https://openairdocs.org/faa-place/IL/Lawrenceville), S/N 242
- [N407RV](https://openairdocs.org/aircraft/N407RV): [Helicopter Services Of Illinois LLC](https://openairdocs.org/faa-owner/HELICOPTER%20SERVICES%20OF%20ILLINOIS%20LLC), [Fisher, IL](https://openairdocs.org/faa-place/IL/Fisher), built 1982, S/N 3621
- [N40MC](https://openairdocs.org/aircraft/N40MC): [Scotts Helicopter Service](https://openairdocs.org/faa-owner/SCOTTS%20HELICOPTER%20SERVICE), [Le Sueur, MN](https://openairdocs.org/faa-place/MN/Le%20Sueur), built 1970, S/N 563
- [N43142](https://openairdocs.org/aircraft/N43142): [Scotts Helicopter Services Inc](https://openairdocs.org/faa-owner/SCOTTS%20HELICOPTER%20SERVICES%20INC), [Le Sueur, MN](https://openairdocs.org/faa-place/MN/Le%20Sueur), built 1977, S/N 1577
- [N500EK](https://openairdocs.org/aircraft/N500EK): [Kar Aviation LLC](https://openairdocs.org/faa-owner/KAR%20AVIATION%20LLC), [Saltville, VA](https://openairdocs.org/faa-place/VA/Saltville), built 1979, S/N 1190610D
- [N500HJ](https://openairdocs.org/aircraft/N500HJ): [392e Inc Trustee](https://openairdocs.org/faa-owner/392E%20INC%20TRUSTEE), [Wilmington, DE](https://openairdocs.org/faa-place/DE/Wilmington), built 1990, S/N 0392E
- [N501MD](https://openairdocs.org/aircraft/N501MD): [Agricultural Air Services LLC](https://openairdocs.org/faa-owner/AGRICULTURAL%20AIR%20SERVICES%20LLC), [Jupiter, FL](https://openairdocs.org/faa-place/FL/Jupiter), built 1991, S/N 0485E
- [N509CG](https://openairdocs.org/aircraft/N509CG): [Cgck Holdings LLC](https://openairdocs.org/faa-owner/CGCK%20HOLDINGS%20LLC), [Henderson, NV](https://openairdocs.org/faa-place/NV/Henderson), built 1974, S/N 840634S
- [N520HS](https://openairdocs.org/aircraft/N520HS): [Hfn Investments LLC](https://openairdocs.org/faa-owner/HFN%20INVESTMENTS%20LLC), [Birmingham, AL](https://openairdocs.org/faa-place/AL/Birmingham), built 1992, S/N LN012
- [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
- [N530RR](https://openairdocs.org/aircraft/N530RR): [Vertical Access Helicopters LLC](https://openairdocs.org/faa-owner/VERTICAL%20ACCESS%20HELICOPTERS%20LLC), [Clermont, FL](https://openairdocs.org/faa-place/FL/Clermont), S/N 1302
- [N537ST](https://openairdocs.org/aircraft/N537ST): [J&J Holdings And Investments LLC](https://openairdocs.org/faa-owner/J%26J%20HOLDINGS%20AND%20INVESTMENTS%20LLC), [Phoenix, AZ](https://openairdocs.org/faa-place/AZ/Phoenix), built 1998, S/N 0540E
- [N6295P](https://openairdocs.org/aircraft/N6295P): [Caribe Helicopters Inc](https://openairdocs.org/faa-owner/CARIBE%20HELICOPTERS%20INC), [Coral Gables, FL](https://openairdocs.org/faa-place/FL/Coral%20Gables), built 1972, S/N 520378S
- [N67599](https://openairdocs.org/aircraft/N67599): [Southmark Aviation Inc](https://openairdocs.org/faa-owner/SOUTHMARK%20AVIATION%20INC), [Hattiesburg, MS](https://openairdocs.org/faa-place/MS/Hattiesburg), built 1994, S/N 5175
- [N677RS](https://openairdocs.org/aircraft/N677RS): [Irriscape Construction Nevada Inc](https://openairdocs.org/faa-owner/IRRISCAPE%20CONSTRUCTION%20NEVADA%20INC), [Las Vegas, NV](https://openairdocs.org/faa-place/NV/Las%20Vegas), built 1972, S/N 520383S
- [N67882](https://openairdocs.org/aircraft/N67882): [Mf Helicopters LLC](https://openairdocs.org/faa-owner/MF%20HELICOPTERS%20LLC), [Troy, WI](https://openairdocs.org/faa-place/WI/Troy), built 1995, S/N 5222
- [N6BU](https://openairdocs.org/aircraft/N6BU): [Agricultural Air Services LLC](https://openairdocs.org/faa-owner/AGRICULTURAL%20AIR%20SERVICES%20LLC), [Jupiter, FL](https://openairdocs.org/faa-place/FL/Jupiter), built 1988, S/N 4034
- [N74678](https://openairdocs.org/aircraft/N74678): [Southmark Aviation Inc](https://openairdocs.org/faa-owner/SOUTHMARK%20AVIATION%20INC), [Hattiesburg, MS](https://openairdocs.org/faa-place/MS/Hattiesburg), built 2001, S/N 5274
- [N805MD](https://openairdocs.org/aircraft/N805MD): [Integrity Aircaft Title Holdings LLC](https://openairdocs.org/faa-owner/INTEGRITY%20AIRCAFT%20TITLE%20HOLDINGS%20LLC), [Portland, OR](https://openairdocs.org/faa-place/OR/Portland), built 1986, S/N 0168E
- [N806LA](https://openairdocs.org/aircraft/N806LA): [Coastal Helicopters Inc](https://openairdocs.org/faa-owner/COASTAL%20HELICOPTERS%20INC), [Panama City, FL](https://openairdocs.org/faa-place/FL/Panama%20City), built 1973, S/N 1008
- [N818HH](https://openairdocs.org/aircraft/N818HH): [Hermanns Helicopters LLC](https://openairdocs.org/faa-owner/HERMANNS%20HELICOPTERS%20LLC), [Arlington, WA](https://openairdocs.org/faa-place/WA/Arlington), built 1974, S/N 1543
- [N827WA](https://openairdocs.org/aircraft/N827WA): [Warner Alan/Whiskey Alpha LLC](https://openairdocs.org/faa-owner/WARNER%20ALAN%2FWHISKEY%20ALPHA%20LLC), [Fort Worth, TX](https://openairdocs.org/faa-place/TX/Fort%20Worth), built 1995, S/N 4386
- [N828HK](https://openairdocs.org/aircraft/N828HK): [Hawkeye Helicopter LLC](https://openairdocs.org/faa-owner/HAWKEYE%20HELICOPTER%20LLC), [Lyndon, KS](https://openairdocs.org/faa-place/KS/Lyndon), built 1996, S/N 0532E
- [N844AD](https://openairdocs.org/aircraft/N844AD): [Ocean Air Helicopter Inc](https://openairdocs.org/faa-owner/OCEAN%20AIR%20HELICOPTER%20INC), [Valley Center, CA](https://openairdocs.org/faa-place/CA/Valley%20Center), built 1981, S/N 3462
- [N865HS](https://openairdocs.org/aircraft/N865HS): [Royal Helicopter Services LLC](https://openairdocs.org/faa-owner/ROYAL%20HELICOPTER%20SERVICES%20LLC), [Exeter, CA](https://openairdocs.org/faa-place/CA/Exeter), built 1977, S/N 1060865S
- [N868H](https://openairdocs.org/aircraft/N868H): [Weyerhaeuser Nr Co](https://openairdocs.org/faa-owner/WEYERHAEUSER%20NR%20CO), [Seattle, WA](https://openairdocs.org/faa-place/WA/Seattle), built 1989, S/N 51318
- [N8VU](https://openairdocs.org/aircraft/N8VU): [Owen Aviation Services LLC](https://openairdocs.org/faa-owner/OWEN%20AVIATION%20SERVICES%20LLC), [Dallas Center, IA](https://openairdocs.org/faa-place/IA/Dallas%20Center), built 1990, S/N 4168

All 54: https://openairdocs.org/engine/allison-250-c20/aircraft.md

## NTSB investigations (14)

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 WPR26LA086](https://openairdocs.org/ntsb/WPR26LA086), Jan 15, 2026: Bell 206L-3 (N868H), Logsden, OR, substantial damage. Probable cause: The inadvertent entanglement of a long line with the skid, which resulted in a loss of flight control. Contributing to the accident was the use of nylon lines instead of steel cables to secure the…
- [NTSB CEN22LA323](https://openairdocs.org/ntsb/CEN22LA323), Jul 18, 2022: Bell 206B (N6BU), Verona, IL, substantial damage. Probable cause: A loss of rotor rpm for reasons that could not be determined.
- [NTSB ERA21LA368](https://openairdocs.org/ntsb/ERA21LA368), Sep 17, 2021: Hughes 369 (N420AT), Ash, NC, substantial damage. Probable cause: A partial loss of engine power due to corrosion and erosion damage to the engine’s compressor section components.
- [NTSB WPR21LA130](https://openairdocs.org/ntsb/WPR21LA130), Mar 13, 2021: Bell 206B (N161BH), Laton, CA, substantial damage. Probable cause: The pilot’s failure to maintain clearance from powerlines during low-altitude maneuvering.
- [NTSB WPR20LA323](https://openairdocs.org/ntsb/WPR20LA323), Sep 22, 2020: MD Helicopter 369 (N509CG), Chemehuevi Valley, CA, substantial damage. Probable cause: The pilot’s failure to maintain helicopter control during an approach with a gusting variable wind, which resulted in an impact with terrain.
- [NTSB CEN18LA260](https://openairdocs.org/ntsb/CEN18LA260), Jul 6, 2018: Bell 206 (N224KM), Bentley, IL, substantial damage. Probable cause: The pilot's failure to ensure that adequate fuel was on board for the maneuvering flight, which resulted in a total loss of engine power due to fuel starvation.
- [NTSB GAA16CA071](https://openairdocs.org/ntsb/GAA16CA071), Oct 20, 2015: Bell 206 (N1060C), Christmas Island, Kiribati, substantial damage. Probable cause: The pilot's inadequate preflight inspection and the maintenance crew's failure to remove the tie down.
- [NTSB WPR13LA303](https://openairdocs.org/ntsb/WPR13LA303), Jun 28, 2013: Bell 206L-3 (N868H), Missoula, MT, substantial damage. Probable cause: The pilot's failure to prevent the helicopter from settling with power and to maintain proper position relative to an external load, which resulted in a loss of control and subsequent hard landing.
- [NTSB WPR13LA137](https://openairdocs.org/ntsb/WPR13LA137), Mar 2, 2013: Hughes 369HS (N471M), Latangai Island, Papua New Guinea, substantial damage, 1 fatal. Probable cause: The failure of both the pilot and the fish master of the vessel to adequately monitor their environment, which resulted in a collision.
- [NTSB ERA12LA366](https://openairdocs.org/ntsb/ERA12LA366), May 25, 2012: Bell 206B (N806LA), Longboat Key, FL, substantial damage. Probable cause: Unknown personnel's failure to comply with the engine manufacturer's engine fuel pump replacement guidance, which resulted in a total loss of engine power due to the engine fuel pump failure.
- [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.
- [NTSB CHI02LA285](https://openairdocs.org/ntsb/CHI02LA285), Sep 17, 2002: Hughes 369D (N500EK), O'Neill, NE, substantial damage. Probable cause: A loss of engine power due to turbine blade separation as a result of hot corrosion damage to the turbine blades. Contributing to the accident was the pilot misjudging the flare at the completion of…
- [NTSB IAD99LA015](https://openairdocs.org/ntsb/IAD99LA015), Nov 12, 1998: Bell 206-B (N32KY), Louisville, KY, substantial damage. Probable cause: A loose 'B' nut on the aircraft's PC Air line which resulted in fuel starvation, and the pilot's abrupt application of aft cyclic to prevent a nose over. Contributing factors were soft terrain and…
- [NTSB NYC73FHJ03](https://openairdocs.org/ntsb/NYC73FHJ03), Jul 14, 1972: Bell 206A (N4042G), Flushing, NY, substantial damage

## FAA accident and incident reports (17)

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 20260115000099A](https://openairdocs.org/incident/20260115000099A), Jan 15, 2026: Bell 206L-3 (N868H), Logsden, OR, Destroyed. An interview of the PIC revealed the following. The accident occurred at the beginning of a part 137 operation using a hopper/bucket to spread fertilizer. The…
- [Incident 20230803010499I](https://openairdocs.org/incident/20230803010499I), Aug 3, 2023: Bell 206B (N67882), Cottage Grove, WI, Minor damage. While applying agricultural spray to a field the pilot of [privacy data omitted] struck a power line with the spray boom of the helicopter. The pilot…
- [Accident 20220718007789A](https://openairdocs.org/incident/20220718007789A), Jul 18, 2022: Bell 206B (N6BU), Verona, IL, Substantial damage. At approximately 1900 local time (0000Z) on July 18, 2022, a Bell 206B helicopter, serial number 4034, [privacy data omitted] departed from an agricultural…
- [Accident 20210917015999A](https://openairdocs.org/incident/20210917015999A), Sep 17, 2021: Hughes 369HS (N420AT), Ash, NC, Destroyed. Pilot stated: "on Friday, 9/17/21 between 10:00 and 11:00 am we were in NC spraying beans. I came in and got the first load of the day and when I flew off, the…
- [Accident 20210313000219A](https://openairdocs.org/incident/20210313000219A), Mar 13, 2021: Bell 206B (N161BH), Layton, CA, Destroyed. During normal [privacy data omitted] conducted at or below 30 ft. AGL, which was necessary to mitigate product drift, while on the last edge cleanup pass along…
- [Accident 20200922016829A](https://openairdocs.org/incident/20200922016829A), Sep 22, 2020: Md Helicopters Inc 369HS (N509CG), Needles, CA, Substantial damage. On 09/23/2020 at approximately 1300 hours, N509CG, an MD helicopters 369HS helicopter, departed the lake havasu airport for a familiarization flight in the…
- [Accident 20180706009229A](https://openairdocs.org/incident/20180706009229A), Jul 6, 2018: Bell 206B (N224KM), Carthage, IL, Substantial damage. Pilot was performing aerial application operations. During a repositioning turn/maneuver, the pilot stated that the fuel pump/pressure warning light…
- [Accident 20130628011389A](https://openairdocs.org/incident/20130628011389A), Jun 28, 2013: Bell 206L-3 (N868H), Missoula, MT, Substantial damage. On June 28, 2013, at 1230 MST, a Bell helicopter 206-L3, N868H, crashed while conducting a performance demonstration to the forest service. Visual…
- [Accident 20130302003479A](https://openairdocs.org/incident/20130302003479A), Mar 2, 2013: Hughes 369HS (N471M), Latangai Island, Substantial damage, 1 fatal. Aircraft was on a fish spotting flight in the south pacific with a crew of one pilot and one passenger (spotter). Fish were spotted in the vicinity of another…
- [Accident 20120525009189A](https://openairdocs.org/incident/20120525009189A), May 25, 2012: Bell 206B (N806LA), Long Boat Key, FL, Substantial damage. Approximately 2:25 pm at a height of 500 ft. [privacy data omitted] Had a complete engine failure (reason unknown at this point). He was approximately 6.5 km…
- [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…
- [Accident 20020916027609A](https://openairdocs.org/incident/20020916027609A), Sep 16, 2002: Hughes 369D (N500EK), O'Neill, NE, Substantial damage. (-23) On September 16, 2002, at 2145 CDT on a cross country flight from harvard, IL, to his cabin in Idaho, the PIC experienced an engine shutdown while in…
- [Accident 19981112031679A](https://openairdocs.org/incident/19981112031679A), Nov 12, 1998: Bell 206B (N32KY), Louisville, KY, Substantial damage. On November 12, 1998, at approximately 1815 EST, a Bell 206BIII helicopter, N32KY received substantial damage as a result of an emergency autorotative landing…
- [Incident 19980906038109I](https://openairdocs.org/incident/19980906038109I), Sep 6, 1998: Bell 206B (N14837), Lenore, ID, Minor damage. (-5)The pilot reports that they were on fire patrol proceeding west bound approximately 200 ft above the clearwater river when they struck four powerlines.…
- [Incident 19960726026629I](https://openairdocs.org/incident/19960726026629I), Jul 26, 1996: Bell 206B (N200VB), Virginia Beach, VA, Minor damage. Narrative: while practicing power auto rotations, the pilot misjudged approach to the landing pad and touched down hard and to the left. The helicopter…
- [Incident 19901224064439I](https://openairdocs.org/incident/19901224064439I), Dec 24, 1990: Bell 206B (N2295F), Sargent, TX. Engine power turbine overspeed. Power landing on beach. Fuel control drive bearing failed.
- [Incident 19801002077739I](https://openairdocs.org/incident/19801002077739I), Oct 2, 1980: Bell 206B (N2751A), Norwood, MA, Minor damage. Pilot practicing autorotation allowed aircraft to hit ground damaging pylon isolation mount & transmission cowling

## Service difficulty reports (945, newest 50)

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

- [SDR 2026FA0000472](https://openairdocs.org/sdr/2026FA0000472), May 28, 2026: LOCK NUT. FAILED. MS20143 NUTS ARE UTILIZED TO SECURE WITHIN THE ENGINE ASSEMBLY THE FOLLOWING ARTICLES COMPRESSOR, TURBINE, FUEL CONTROL, GOVERNOR, FUEL PUMP, TACH GENERATORS, G
- [SDR EVCA07192021](https://openairdocs.org/sdr/EVCA07192021), Jul 19, 2021: CONTROL UNIT. MALFUNCTIONED. RECENTLY INSTALLED SYSTEM TRUE BLUE BATTERY WAS GETTING A RED TEMP HOT CAUTION LIGHT FOR THE AIRCRAFT BATTERY WHEN THE STARTER BUTTON WAS PRESSED. THE BATTERY W
- [SDR QMLA2020052820022](https://openairdocs.org/sdr/QMLA2020052820022), May 26, 2020: DUCT. LOOSE. DURING CRUISE FLIGHT, CREW AND PATIENT COMPLAINED OF CARBON MONOXIDE POISONING SYMPTOMS INCLUDING LIGHT HEADEDNESS, SLEEPINESS AND HEADACHE. HEATER WAS IN OFF P
- [SDR QMLA2019112299087](https://openairdocs.org/sdr/QMLA2019112299087), Nov 19, 2019: ENGINE. MAKING METAL. DURING ROUTINE INSPECTION OF ENGINE CHIP DETECTORS FOUND NUMEROUS CHIPS AND DEBRIS ON BOTH UPPER AND LOWER CHIP PLUGS. AMOUNT AND SIZE EXCEEDED ALLOWABLE PER RO
- [SDR CA190716009](https://openairdocs.org/sdr/CA190716009), Jun 29, 2019: GYRO. FAULTY. (CAN) IT WAS REPORTED TO BELL:SHORTLY AFTER TAKEOFF, SMOKE STARTED TO FILL THE COCKPIT. THE PILOT TURNED OFF THE BATTERY, OPENED THE SIDE WINDOW, AND MADE AN EM
- [SDR 2019FA0000194](https://openairdocs.org/sdr/2019FA0000194), Jun 25, 2019: ENGINE. MAKING METAL. ENGINE CHIP LIGHT ILLUMINATED WHEN ENGINE WAS BROUGHT TO FLIGHT IDLE AFTER ENGINE START UP. MAINTENANCE FOUND 2 FLAKES WITHIN LIMITS ON THE UPPER CHIP PLUG.A 30
- [SDR CA190409008](https://openairdocs.org/sdr/CA190409008), Mar 26, 2019: BLADE. MISMANUFACTURED. (CAN) UPON INSTALLATION OF A SET OF NEW MAIN ROTOR BLADES IT WAS DISCOVERED THE ALIGNMENT PIN WAS MISSING FROM ONE OF THE NEW BLADES. PART NUMBER 206-010-200-15
- [SDR X2RA2018F00000](https://openairdocs.org/sdr/X2RA2018F00000), Dec 14, 2017: FUEL CONTROL. FAILED. PILOT EXPERIENCED DELAYED HOT AND ERRATIC STARTS. FOUND PLAY IN THE POINTER ROD, THIS WOULD AFFECT THE START SCHEDULING. THE SLOP IS WHERE THE POINTER ROD ENGAG
- [SDR HDNA20160917012](https://openairdocs.org/sdr/HDNA20160917012), Sep 17, 2016: ENGINE. MAKING METAL. AT CRUISE, THE MAG PLUG 2 WARNING LIGHT ILLUMINATED. REDUCED POWER TO ESTABLISH A SUITABLE OEI CONDITION AND CALLED FOR THE APPLICABLE RFM EMERGENCY PROCEDURE C
- [SDR K2DA20160308001](https://openairdocs.org/sdr/K2DA20160308001), Mar 5, 2016: BLADE. DELAMINATED. UPON THE DAILY INSPECTION, A COIN TAP TEST WAS PERFORMED ON THE TAIL ROTOR BLADES. TAIL ROTOR BLADE, PN 500P3100-105, SN C519 WAS DISCOVERED TO BE DELAMINATED. 
- [SDR 9EK2016F00000](https://openairdocs.org/sdr/9EK2016F00000), Feb 15, 2016: B-NUT. LOOSE. FOUND B-NUT LOOSE ON ENGINE THAT ATTACHES RETURN OIL LINE TO RESERVOIR. LINE DOES NOT HAVE ANY SAFETYING PROVISION. METAL FITTING ASSY WAS FOUND LOOSE NOT HOSE.
- [SDR 2016FA0000076](https://openairdocs.org/sdr/2016FA0000076), Feb 9, 2016: BLADE. DELAMINATED. UPON THE DAILY INSPECTION, A COIN TAP TEST WAS PERFORMED ON THE TAIL ROTOR BLADES AND BLADE WAS DISCOVERED TO BE DELAMINATED. THE DELAMINATION CONSISTS OF A 2" 
- [SDR K2DA20160107001](https://openairdocs.org/sdr/K2DA20160107001), Dec 31, 2015: BLADE. DELAMINATED. DURING DAILY INSPECTION, AFTER THE DAYS FLIGHTS, ONE OF THE TAIL ROTOR BLADES WAS FOUND TO HAVE VARIOUS SPOTS, VARYING IN LENGTH FROM .5 INCHES TO 2 INCHES, WHE
- [SDR DCGA2015FA0000622](https://openairdocs.org/sdr/DCGA2015FA0000622), Dec 3, 2015: ENGINE. MAKING METAL. PILOT GOT AN INTERMITTENT ENGINE CHIP LIGHT INDICATION AFTER TAKEOFF AND RETURNED FOR LANDING. MAINTENANCE FOUND LIGHT EXTINGUISHED BUT FOUND METAL ON UPPER AND
- [SDR 8MHR2015FA0000422](https://openairdocs.org/sdr/8MHR2015FA0000422), Aug 24, 2015: NOZZLE. FRACTURED. ENGINE WAS REPORTED TO HAVE N1 LOCKUP. ON DISASSEMBLY OF THE TURBINE, FOUND 6 OF THE 8 LOCATING TANGS SEPARATED FROM THE SECOND STAGE NOZZLE.
- [SDR QMLA2015081415072](https://openairdocs.org/sdr/QMLA2015081415072), Aug 14, 2015: SKIN. CRACKED. FOUND CRACK IN UPPER AFT FUSELAGE SKIN NEAR THE UPPER LT LONGERON AS DESCRIBED, THE SUBJECT OF AD2015-05-04 & ASB 407-11-95, TB 407-12-96. DURING THE COMPLIANCE
- [SDR ALGA0730201536129](https://openairdocs.org/sdr/ALGA0730201536129), Jul 15, 2015: BEARING. WORN. DURING CRUISE FLIGHT ENGINE CHIP LIGHT ILLUMINATED. LANDED ON AN OFFSHORE PLATFORM, EXAMINED CHIP PLUG FOUND METAL PARTICLES. UPON RECOVERY OF AIRCRAFT & SUBSEQ
- [SDR K2DA20150602001](https://openairdocs.org/sdr/K2DA20150602001), May 31, 2015: PUMP. FAILED. DURING CRUISE FLIGHT THE MAIN ROTOR TRANSMISSION LOW OIL PRESS LIGHT ELIMINATED. AN UNSCHEDULED PRECAUTIONARY LANDING WAS MADE IN AN OPEN FIELD WITHOUT INCIDENT
- [SDR K2DA2015FA0000256](https://openairdocs.org/sdr/K2DA2015FA0000256), May 31, 2015: PUMP. FAILED. DURING CRUISE FLIGHT, THE MAIN ROTOR TRANSMISSION LOW OIL PRESSURE LIGHT ELIMINATED. AN UNSCHEDULED PRECAUTIONARY LANDING WAS MADE IN AN OPEN FIELD WITHOUT INCI
- [SDR DCGA2015FA0000217](https://openairdocs.org/sdr/DCGA2015FA0000217), May 19, 2015: TURBINE. OUT OF TOLERANCE. PILOT REPORTED CHIRPING NOISE FROM ENGINE AT END OF DAY SHUTDOWN. MAINTENANCE REMOVED TURBINE ASSY FOR SUSPECT N2 RUBBING.
- [SDR QMLA2015041515029](https://openairdocs.org/sdr/QMLA2015041515029), Apr 15, 2015: HEATER. PILOT ERROR. FLIGHT CREW SMELLED HOT PLASTIC IN AFT CABIN AREA WHILE HEATER WAS IN USE. THIS IS AN ELECTRICALLY ACTUATED SYS, OPERATED BY THE PILOT. IF PILOT SELECTED SETTIN
- [SDR HDNA201502190004](https://openairdocs.org/sdr/HDNA201502190004), Feb 19, 2015: ENGINE. MAKING METAL. ON STARTUP NR 1 ENG CHIP LIGHT ILLUMINATED. UPON INSPECTION OF CHIP DETECTORS FOUND UPPER DETECTOR TO HAVE EXCESSIVE AMOUNTS OF METAL. R & R TURBINE.
- [SDR 2015FA0000049](https://openairdocs.org/sdr/2015FA0000049), Jan 30, 2015: SCISSORS. UNSERVICEABLE. INSTALLED THE O/H SCISSORS LINK AND WAS NOTIFIED BY THE CUSTOMER THAT ON A ROUTINE ALF CHECKS, ON THE ROTATING SCISSORS LINK THAT ABLE ENGINEERING HAD RE-BUSHED
- [SDR 2015FA0000003](https://openairdocs.org/sdr/2015FA0000003), Jan 8, 2015: BLADDER. LEAKING. SMALL PUDDLE OF FUEL FOUND ON THE GROUND UNDER THE BELLY OF THE ACFT AT PREFLIGHT. MAINTENANCE FOUND A SMALL PUNCTURE IN THE RT FUEL BLADDER OF AN UNCONFIRMED O
- [SDR FTYRN201410180001](https://openairdocs.org/sdr/FTYRN201410180001), Oct 27, 2014: COMBUSTION CASE. CRACKED. NOTED A HIGH TOT INDICATION ON APPROACH TO LAND AT HOME STATION. VISUALLY INSPECTED AND FOUND CRACK IN OUTER COMBUSTION CASE ASSEMBLY.
- [SDR CA140903012](https://openairdocs.org/sdr/CA140903012), Aug 24, 2014: BEARING. ROUGH. (CAN) AFTER LANDING AND DURING ENGINE WIND DOWN, A LOUD SQUEAL WAS HEARD COMING FROM THE AFT OF THE HELICOPTER. IT WAS DETERMINED THAT THE NOISE WAS EMANATING F
- [SDR K2DA20140701001](https://openairdocs.org/sdr/K2DA20140701001), Jul 1, 2014: PRESSURE SWITCH. FAULTY. MAIN ROTOR TRANSMISSION LOW OIL PRESS LIGHT ILLUMINATED IN FLIGHT PREFORMED PRECAUTIONARY LANDING. TRANSMISSION OIL PRESS SWITCH INOPERATIVE. REPLACED PRESS SWI
- [SDR IAVA201406110001](https://openairdocs.org/sdr/IAVA201406110001), May 30, 2014: COMBUSTION CASE. CRACKED. OUTER COMBUSTION CASE CRACKED ON THE RT SIDE UNDER WIRE REINFORCEMENT PATCH.
- [SDR K2DA20140427001](https://openairdocs.org/sdr/K2DA20140427001), Apr 27, 2014: SHAFT. WORN. TRANSMISSION OIL PRESS LIGHT DURING FLIGHT. PRECAUTIONARY LANDING PREFORMED. TRANSMISSION OIL PUMP INPUT SHAFT NOT PROPERLY SEATED & WORN. REPLACED INPUT SHAFT 
- [SDR DCGA2014042500280](https://openairdocs.org/sdr/DCGA2014042500280), Apr 23, 2014: WIRE. SHORTED. PILOT REPORTED AN ENGINE CHIP LIGHT. THE CHIP LIGHT WAS EXTINGUISHED WHEN CHIP PLUGS WERE REMOVED AND CLEANED. DURING OPS CHECKS THE LIGHT CAME BACK ON. MAINTEN
- [SDR WO5A2014042100261](https://openairdocs.org/sdr/WO5A2014042100261), Apr 1, 2014: BEARING. FAILED. OPERATOR EXPERIENCED ERRATIC ENGINE OPERATION INCLUDING INABILITY TO LIGHT OFF AS WELL AS UNCOMMANDED INCREASES IN N2 & NR SPEEDS. PILOT REPORTED THAT DURING LA
- [SDR CA130812003](https://openairdocs.org/sdr/CA130812003), Aug 10, 2013: BLADE. DAMAGED. (CAN) IN CRUISE FLIGHT THE PILOT NOTICED A CHANGE IN BLADE NOISE, LIKE PLASTIC BAG ON BLADE, WAS APPROXIMATELY 1 MILE FROM THE BASE, SHUTDOWN THE ACFT, AND CHEC
- [SDR CA130612006](https://openairdocs.org/sdr/CA130612006), Jun 5, 2013: ECU. FAILED. (CAN) 11 PM LOCAL TIME. THE PILOT MADE A NORMAL OUTBOUND FLIGHT AND SHUTDOWN AT A TRAUMA SCENE. 5 MINUTES INTO A 10 MINUTE RETURN FLIGHT THE FADEC DEGRADE LIGHT
- [SDR CA130509006](https://openairdocs.org/sdr/CA130509006), May 9, 2013: ELT. FAILED. (CAN) ELT FAILED POWER OUTPUT TEST FOR 121.5 MHZ AND 406 MHZ. UNIT FLASHED CODE INDICATING LO RF POWER. POWER CONFIRMED WITH BEACON TEST EQUIPMENT. ELT BATTERY 
- [SDR JBZA20130513003](https://openairdocs.org/sdr/JBZA20130513003), May 7, 2013: BLADE. DAMAGED. WHILE ENROUTE, ACFT HAD A BIRD STRIKE AT THE MAIN ROTOR SYS CAUSING A VIBRATION. CREW MADE A PRECAUTIONARY LANDING AT THE NEAREST AIRPORT. AFTER SHUTDOWN, PILOT
- [SDR CA130502011](https://openairdocs.org/sdr/CA130502011), May 2, 2013: GEARBOX. MAKING METAL. (CAN) ENGINE GEARBOX WAS O/H 7.6 HRS IN SERVICE AND THE PILOT REPORTED AN ENGINE CHIP LIGHT. UPON FURTHER INVESTIGATION OF THE CHIP PLUG, IT APPEARS TO BE A DRI
- [SDR AQH2013F00000](https://openairdocs.org/sdr/AQH2013F00000), Mar 11, 2013: STARTER GEN. FAILED. DURING NORMAL FLIGHT, THE PILOT REPORTED THE GENERATOR FAILED. THE HELICOPTER LANDED WITHOUT INCIDENT. SUBSEQUENT INVESTIGATION BY THE PILOT INDICATED THE START
- [SDR 2013FA0000553](https://openairdocs.org/sdr/2013FA0000553), Jan 22, 2013: BULKHEAD. CRACKED. BULKHEAD CRACKED IN LT AFT GEARBOX ATTACHMENT HOLE. CRACKING FOUND VISUALLY DURING CORROSION INSPECTION.
- [SDR CA130110005](https://openairdocs.org/sdr/CA130110005), Jan 9, 2013: GOVERNOR. MALFUNCTIONED. (CAN) PREFLIGHT INSPECTION OF ACFT REVEALED GOVERNOR BIASING SHAFT, PN 206-062-717-1, ON TRANSMISSION DECK TWISTED AT SHEAR POINT. LINEAR ACTUATOR ARM REMOVED A
- [SDR CA130109010](https://openairdocs.org/sdr/CA130109010), Jan 7, 2013: HOUSING. FAILED. (CAN) THE BEARING HOUSING WAS REMOVED FROM COMPRESSOR ASSEMBLY DUE TO LOW POWER, AND WAS INDUCTED INTO THE SHOP. BEARING HOUSING AND NUT, WITH SHEARED PORTION O
- [SDR 2013FA0000552](https://openairdocs.org/sdr/2013FA0000552), Dec 17, 2012: BULKHEAD. CRACKED. BULKHEAD CRACKED IN LT AFT GEARBOX ATTACHMENT HOLE. CRACKING WAS FOUND VISUALLY DURING CORROSION INSPECTION.
- [SDR CA121205011](https://openairdocs.org/sdr/CA121205011), Dec 5, 2012: ELT. MALFUNCTIONED. (CAN) DURING THE SELF TEST OF THE ELT USING THE REMOTE SWITCH THE SYSTEM RESPONDED WITH AN ERROR CODE OF 3+2 FLASHES INDICATING A LOW RF POWER FAULT. FAULT WAS 
- [SDR CA121203008](https://openairdocs.org/sdr/CA121203008), Dec 1, 2012: HEATER. SHORTED. (CAN) SHROUD HEATER NOT WORKING. HEATER CIRCUIT BREAKER TRIPPED. HEATER MOTOR ROUGH TO TURN AND SHORTING OUT INTERNALLY. MOTOR REPLACED.
- [SDR CA121023008](https://openairdocs.org/sdr/CA121023008), Oct 19, 2012: ENCODER. FAILED. (CAN) ATC REPORTED THAT ACFT WAS NOT REPORTING MODE C. INSPECTION OF ENCODER FOUND WATER ON THE CIRCUIT BOARD WHICH LEAD TO A SHORT. ENCODER REPLACED. MAINTENAN
- [SDR CA121010010](https://openairdocs.org/sdr/CA121010010), Oct 10, 2012: PIN. FAILED. (CAN) WHILE DOING PREFLIGHT CHECKS FOR A TRAINING FLIGHT WITH DUAL PILOTS AND DUAL CONTROLS INSTALLED, TRAINING PILOT WAS IN THE LT SEAT DURING START-UP. ONCE A
- [SDR CA120905008](https://openairdocs.org/sdr/CA120905008), Sep 5, 2012: DRIVE SHAFT. OVERTEMP. (CAN) DURING 100 HR INSPECTION THE DRIVESHAFT TELI-TEMP INDICATORS SHOWED DRIVESHAFT COUPLING WAS OVERTEMPED. DRIVESHAFT RAN 151 HOURS SINCE LAST O/H.
- [SDR CA120905010](https://openairdocs.org/sdr/CA120905010), Sep 5, 2012: STARTER GEN. NOISY. (CAN) NOISE IN ACFT AUDIO SYS WHEN STARTER GENERATOR SWITCHED ON. STARTER GENERATOR REPLACED.
- [SDR K2DA201209070502](https://openairdocs.org/sdr/K2DA201209070502), Sep 2, 2012: ENGINE. WARNING LIGHT. ENGINE CHIP LIGHT ILLUMINATED DURING FLIGHT. PRECAUTIONARY LANDING PERFORMED AND ENGINE SHUTDOWN. MX DISPATCHED WITH COMPANY ACFT AND PASSENGERS WERE FLOWN FOR 
- [SDR CA120905012](https://openairdocs.org/sdr/CA120905012), Aug 25, 2012: FUEL CONTROL. FAILED. (CAN) DURING START, ALL NRS AND TEMPERATURES WERE NORMAL AT 40 PERCENT N1 ENGINE FLAMED OUT AS IF FUEL WAS CUTOFF. FUEL CONTROL REPLACED.
- [SDR CA120905009](https://openairdocs.org/sdr/CA120905009), Aug 23, 2012: GOVERNOR. MALFUNCTIONED. (CAN) GOVERNOR WILL NOT RECOVER FROM OVERSPEED WHEN COLLECTIVE DECREASED.

All 945: https://openairdocs.org/engine/allison-250-c20/reports.md

## STCs that may be installed (OpenAirDocs) (6)

Approved for this engine 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 SE5511NM](https://openairdocs.org/stc/SE5511NM): Installation of compressor discharge pressue (PC) valve. Bell Helicopter Textron Inc
- [STC SE769NW](https://openairdocs.org/stc/SE769NW): Installation of Soloy Part No. 250-1001-1 fuel line. Siam Hiller Holdings Inc
- [STC SE00027EN](https://openairdocs.org/stc/SE00027EN): Installation of Pratt & Whitney Engine Services Inc. Intellistart plus electronic control unit (ECU), P/N DPU-K-010 on the specified 250 engine models. Pratt & Whitney Engine Services Inc
- [STC SE492GL](https://openairdocs.org/stc/SE492GL): Incorporation of a fuel flow transducer. Shadin Avionics
- [STC ST00037AT](https://openairdocs.org/stc/ST00037AT): Unison igniter plugs, P/N 9044400-1. Unison Industries
- [STC SQ00338AT](https://openairdocs.org/stc/SQ00338AT): Unison igniter leads, P/N9048222-101, 102, 103, 104, 105, 106. Unison Industries

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