Allison (Rolls-Royce) 250-C20 series
530 aircraft on the U.S. register carry an Allison (Rolls-Royce) 250-C20 series engine, rated at about 420 horsepower. The Bell 206 JetRanger and LongRanger is the model most often fitted with it (324 aircraft). The aircraft carrying it were built between 1967 and 2021.
The FAA records engines by code, usually at the level of a series ("O-320 series") rather than the exact variant; this page gathers every FAA code that reads as Allison (Rolls-Royce) 250-C20 series. FAA spelling: 250-C20 SER.
Fitted to model families
Bell 206 JetRanger and LongRanger324Hughes Helicopters Inc HUGHES 36941Mcdonnell Douglas Helicopter 36941Hughes Helicopters Inc 36917Agusta Spa A10917Mcdonnell Douglas Helicopter 50014Hughes 369 500 series helicopters12Bell 40711Aerospatiale AS-35510Bell OH-587Md Helicopters Inc 5006Md Helicopters Inc 3695
Bell 206 JetRanger and LongRanger · Hughes Helicopters Inc HUGHES 369 · Mcdonnell Douglas Helicopter 369 · Hughes Helicopters Inc 369 · Agusta Spa A109 · Mcdonnell Douglas Helicopter 500 · Hughes 369 500 series helicopters · Bell 407 · Aerospatiale AS-355 · Bell OH-58
Where they are owner's state
Delaware55California48Florida43Texas27Oregon26Utah22Arizona20Washington15Montana15Alaska15
Kind of aircraft
Helicopters529 (100%)Turboprops1 (0.2%)
When the aircraft were built by decade
What the FAA has certified, ordered and been told about the Allison (Rolls-Royce) 250-C20 series the component layer
No FAA order in the current files names this engine series. Operators and repair shops have filed 747 failure reports with the FAA since 1995, 8 of them in the last ten years.
Failure reports 747 since · what operators and shops told the FAA
Parts most often reported as the reports name them
Engine34Bearing27Nozzle27Gearshaft26Seal20Fuel Control18Bleed Valve16Connector15Turbine Wheel13Blade12
Latest reports
2026-06-11Oil System: low pressure
2025-11-08Blade: failed
2025-04-15Compressor: damaged
2021-09-04Indication Sys: reads high
2019-07-18Shaft: cracked
Sources: the FAA's type certificate data sheets, airworthiness directives, supplemental type certificates, special conditions and special airworthiness information bulletins (Dynamic Regulatory System), and the FAA's service difficulty reports. A failure report is what an operator or repair station chose to file; the counts show reporting as much as reliability, and larger and commercial fleets report more. How the systems are grouped.
Connections how this engine series links to the rest of the register
Fitted to
- Bell 206 JetRanger and LongRanger 324 with this engine series
- Hughes Helicopters Inc HUGHES 369 41 with this engine series
- Mcdonnell Douglas Helicopter 369 41 with this engine series
- Hughes Helicopters Inc 369 17 with this engine series
- Agusta Spa A109 17 with this engine series
- Mcdonnell Douglas Helicopter 500 14 with this engine series
- Hughes 369 500 series helicopters 12 with this engine series
- Bell 407 11 with this engine series
Where they are
- Delaware 55 of these aircraft
- California 48 of these aircraft
- Florida 43 of these aircraft
- Texas 27 of these aircraft
- Oregon 26 of these aircraft
Biggest operators
- Helicopters INC 12 of these aircraft
- Brown Helicopter INC 9 of these aircraft
- United States Army 6 of these aircraft
- Bank Of Utah Trustee 6 of these aircraft
- Usda Aphis Ws 5 of these aircraft
Airworthiness
- Failure reports on the Allison (Rolls-Royce) 250-C20 series 747 reports since 1995
Analytics
These connections as data: /graph/engine/allison-rolls-royce-250-c20-series.json · about the eFlight graph.
Aircraft newest certificates first · 530
| Tail no. | Maker and model | Group | Owner and base | Certificate | Registered | Status |
|---|---|---|---|---|---|---|
| N1610B | Mcdonnell Douglas Helicopter 369E |
Rotorcraft | Blackstead Investments INC Boise, Idaho |
Restricted | 2021-03-11 | ValidFAA registration status code V: Valid registration. All codes |
| N76544 | Bell 206B |
Rotorcraft | Individual owner Minnesota |
Standard | 2021-03-04 | ValidFAA registration status code V: Valid registration. All codes |
| N458PB | Hughes Helicopters Inc 369E |
Rotorcraft | Individual owner Texas |
Standard | 2021-02-25 | ValidFAA registration status code V: Valid registration. All codes |
| N935M | Hughes Helicopters Inc HUGHES 369D |
Rotorcraft | Co-owned owner California |
Standard | 2021-02-13 | ValidFAA registration status code V: Valid registration. All codes |
| N48552 | Bell 206B |
Rotorcraft | Brown Helicopter INC Pensacola, Florida |
Standard | 2021-02-11 | ValidFAA registration status code V: Valid registration. All codes |
| N67234 | Bell 206B |
Rotorcraft | Brown Helicopter INC Pensacola, Florida |
Standard | 2021-02-11 | ValidFAA registration status code V: Valid registration. All codes |
| N67804 | Bell 206B |
Rotorcraft | Brown Helicopter INC Pensacola, Florida |
Standard | 2021-02-11 | ValidFAA registration status code V: Valid registration. All codes |
| N67606 | Bell 206B |
Rotorcraft | Robinson Air Crane INC Miami, Florida |
Standard | 2021-01-27 | ValidFAA registration status code V: Valid registration. All codes |
| N487AL | Bell 407 |
Rotorcraft | Redding Air Service INC Redding, California |
Standard | 2021-01-26 | ValidFAA registration status code V: Valid registration. All codes |
| N571HH | Hughes Helicopters Inc HUGHES 369D |
Rotorcraft | Hlh Leasing LLC Wilmington, Delaware |
Standard | 2021-01-11 | ValidFAA registration status code V: Valid registration. All codes |
| N897BC | Agusta Spa A109C |
Rotorcraft | Intersouth INC Santo Domingo, |
Standard | 2020-12-17 | ValidFAA registration status code V: Valid registration. All codes |
| N600SP | Agusta Spa A109A II |
Rotorcraft | Magenta Aviation Solutions LLC Wilmington, Delaware |
Standard | 2020-11-24 | ValidFAA registration status code V: Valid registration. All codes |
| N22PY | Bell 206B |
Rotorcraft | Ezell Holdings LLC Tucson, Arizona |
Restricted | 2020-11-21 | ValidFAA registration status code V: Valid registration. All codes |
| N6768X | Bell 206B |
Rotorcraft | Jl Aviation INC Boring, Oregon |
Standard | 2020-11-19 | ValidFAA registration status code V: Valid registration. All codes |
| N17NX | Bell 206B |
Rotorcraft | Trans 5 Investments LLC Saint Martinville, Louisiana |
Multiple | 2020-10-24 | ValidFAA registration status code V: Valid registration. All codes |
| N3523T | Bell 206B |
Rotorcraft | Individual owner Texas |
Multiple | 2020-10-07 | ValidFAA registration status code V: Valid registration. All codes |
| N513PJ | Mcdonnell Douglas Helicopter 500N |
Rotorcraft | Mid Pacific Aero Services LLC Honolulu, Hawaii |
Standard | 2020-09-22 | ValidFAA registration status code V: Valid registration. All codes |
| N206NY | Bell 206B |
Rotorcraft | Hornet International LLC Picayune, Mississippi |
Standard | 2020-07-22 | ValidFAA registration status code V: Valid registration. All codes |
| N745HA | Agusta Spa A109A II |
Rotorcraft | Private LLC Kalispell, Montana |
Standard | 2020-07-13 | InvalidFAA registration status code W: Registration certificate deemed ineffective or invalid. All codes |
| N67HF | Hughes Helicopters Inc HUGHES 369D |
Rotorcraft | Padgett AG Rotors LLC Missoula, Montana |
Standard | 2020-06-09 | ValidFAA registration status code V: Valid registration. All codes |
| N518Z | Bell 206B |
Rotorcraft | Rotormate LLC Royse City, Texas |
Standard | 2020-05-07 | ValidFAA registration status code V: Valid registration. All codes |
| N67273 | Bell 206B |
Rotorcraft | Brown Helicopter INC Pensacola, Florida |
Standard | 2020-04-30 | ValidFAA registration status code V: Valid registration. All codes |
| N67455 | Bell 206B |
Rotorcraft | Brown Helicopter INC Pensacola, Florida |
Standard | 2020-04-30 | ValidFAA registration status code V: Valid registration. All codes |
| N67745 | Bell 206B |
Rotorcraft | Brown Helicopter INC Pensacola, Florida |
Standard | 2020-04-30 | ValidFAA registration status code V: Valid registration. All codes |
| N90CL | Bell 206B |
Rotorcraft | Helicopters INC Wilmington, Delaware |
Standard | 2020-04-29 | ValidFAA registration status code V: Valid registration. All codes |
| N18CP | Mcdonnell Douglas Helicopter 369E |
Rotorcraft | Peoples Properties LLC Tucson, Arizona |
Standard | 2020-04-06 | ValidFAA registration status code V: Valid registration. All codes |
| N406DB | Bell 206B |
Rotorcraft | Right Brother Aviation LLC Chaffee, New York |
Standard | 2020-04-02 | ValidFAA registration status code V: Valid registration. All codes |
| N82855 | Garlick Helicopters Inc OH-58C |
Rotorcraft | Triple F Flying INC Benton, Pennsylvania |
Restricted | 2020-03-17 | ValidFAA registration status code V: Valid registration. All codes |
| N760AM | Hughes 369HS |
Rotorcraft | Air Services INC Minneapolis, Kansas |
Standard | 2020-02-12 | ValidFAA registration status code V: Valid registration. All codes |
| N9VF | Bell 206B |
Rotorcraft | Atxaviation LLC Creedmoor, Texas |
Standard | 2020-01-16 | ValidFAA registration status code V: Valid registration. All codes |
| N67265 | Bell 206B |
Rotorcraft | Usda Aphis Ws Cedar City, Utah |
Standard | 2020-01-10 | ValidFAA registration status code V: Valid registration. All codes |
| N67767 | Bell 206B |
Rotorcraft | Usda Aphis Ws Cedar City, Utah |
Standard | 2020-01-10 | ValidFAA registration status code V: Valid registration. All codes |
| N67908 | Bell 206B |
Rotorcraft | Usda Aphis Ws Cedar City, Utah |
Standard | 2020-01-10 | ValidFAA registration status code V: Valid registration. All codes |
| N79987 | Bell 206B |
Rotorcraft | Usda Aphis Ws Cedar City, Utah |
Standard | 2020-01-10 | ValidFAA registration status code V: Valid registration. All codes |
| N91637 | Bell 206B |
Rotorcraft | Usda Aphis Ws Cedar City, Utah |
Standard | 2020-01-10 | ValidFAA registration status code V: Valid registration. All codes |
| N358RL | Bell 206B |
Rotorcraft | Topside Aviation INC Brasstown, North Carolina |
Standard | 2019-11-22 | ValidFAA registration status code V: Valid registration. All codes |
| N67147 | Bell 206B |
Rotorcraft | Usda Aphis Wildlife Services Cedar City, Utah |
Standard | 2019-11-22 | ValidFAA registration status code V: Valid registration. All codes |
| N67525 | Bell 206B |
Rotorcraft | Usda Aphis Wildlife Services Cedar City, Utah |
Standard | 2019-11-22 | ValidFAA registration status code V: Valid registration. All codes |
| N679AG | Bell 206B |
Rotorcraft | Usda Aphis Wildlife Services Cedar City, Utah |
Standard | 2019-11-22 | ValidFAA registration status code V: Valid registration. All codes |
| N77766 | Bell 206B |
Rotorcraft | Usda Aphis Wildlife Services Cedar City, Utah |
Standard | 2019-11-22 | ValidFAA registration status code V: Valid registration. All codes |
| N303HF | Mcdonnell Douglas Helicopter 500N |
Rotorcraft | Honolulu Fire Department Honolulu, Hawaii |
Standard | 2019-10-23 | ValidFAA registration status code V: Valid registration. All codes |
| N95SK | Bell 206B |
Rotorcraft | Central Virginia Aviation INC North Dinwiddie, Virginia |
Restricted | 2019-10-21 | ValidFAA registration status code V: Valid registration. All codes |
| N105SU | Hughes Helicopters Inc HUGHES 369D |
Rotorcraft | Signature Property Holdings LLC Wilmington, Delaware |
Multiple | 2019-10-11 | ValidFAA registration status code V: Valid registration. All codes |
| N67432 | Bell 206B |
Rotorcraft | Brown Helicopter INC Pensacola, Florida |
Standard | 2019-10-02 | ValidFAA registration status code V: Valid registration. All codes |
| N188S | Agusta Spa A109A II |
Rotorcraft | Hornet International LLC Picayune, Mississippi |
Standard | 2019-07-16 | ValidFAA registration status code V: Valid registration. All codes |
| N869VS | Hughes Helicopters Inc HUGHES 369D |
Rotorcraft | Vertol Systems CO INC Destin, Florida |
Standard | 2019-07-10 | ValidFAA registration status code V: Valid registration. All codes |
| N500NC | Hughes Helicopters Inc HUGHES 369D |
Rotorcraft | Sanders Associates LLC Bluefield, Virginia |
Multiple | 2019-06-25 | ValidFAA registration status code V: Valid registration. All codes |
| N6UL | Bell 206-L4 |
Rotorcraft | Helicopters INC Wilmington, Delaware |
Standard | 2019-06-13 | ValidFAA registration status code V: Valid registration. All codes |
| N969VS | Hughes Helicopters Inc HUGHES 369D |
Rotorcraft | Vertol Systems CO INC Destin, Florida |
Standard | 2019-06-12 | ValidFAA registration status code V: Valid registration. All codes |
| N411JH | Mcdonnell Douglas Helicopter 369E |
Rotorcraft | Individual owner California |
Standard | 2019-06-10 | ValidFAA registration status code V: Valid registration. All codes |
| N526HA | Bell 206B |
Rotorcraft | Helo N526Ha LLC Richmond, Virginia |
Standard | 2019-05-28 | ValidFAA registration status code V: Valid registration. All codes |
| N98AZ | Bell 206B |
Rotorcraft | Big Tree Aviation LLC Salem, Oregon |
Standard | 2019-05-16 | ValidFAA registration status code V: Valid registration. All codes |
| N3917G | Bell 206B |
Rotorcraft | Bank of Utah Trustee Salt Lake City, Utah |
Restricted | 2019-05-15 | ValidFAA registration status code V: Valid registration. All codes |
| N500MV | Hughes Helicopters Inc HUGHES 369D |
Rotorcraft | Treeline Helicopters INC Bristol, Tennessee |
Standard | 2019-05-07 | ValidFAA registration status code V: Valid registration. All codes |
| N520GK | Md Helicopters Inc 500N |
Rotorcraft | Glacier Aviation Services INC West Glacier, Montana |
Standard | 2019-04-30 | ValidFAA registration status code V: Valid registration. All codes |
| N8QV | Bell 206B |
Rotorcraft | D H Helicopter INC Mascoutah, Illinois |
Standard | 2019-04-29 | ValidFAA registration status code V: Valid registration. All codes |
| N230MD | Hughes Helicopters Inc HUGHES 369D |
Rotorcraft | Air2 LLC Blountville, Tennessee |
Standard | 2019-03-16 | ValidFAA registration status code V: Valid registration. All codes |
| N240FL | Hughes Helicopters Inc HUGHES 369D |
Rotorcraft | Air2 LLC Blountville, Tennessee |
Standard | 2019-03-16 | ValidFAA registration status code V: Valid registration. All codes |
| N67662 | Bell 206B |
Rotorcraft | Austin Police Department Pflugerville, Texas |
Standard | 2019-03-06 | ValidFAA registration status code V: Valid registration. All codes |
| N917SU | Bell 206-L4 |
Rotorcraft | Southern Utah University Cedar City, Utah |
Standard | 2019-03-02 | ValidFAA registration status code V: Valid registration. All codes |
| N866M | Bell 206B |
Rotorcraft | Middlesex County Mosquito Extermination Commission Edison, New Jersey |
Restricted | 2019-01-17 | ValidFAA registration status code V: Valid registration. All codes |
| N448EA | Bell 206B |
Rotorcraft | Edgefield Aviation LLC Sandy, Oregon |
Standard | 2018-12-21 | ValidFAA registration status code V: Valid registration. All codes |
| N911UD | Bell 206B |
Rotorcraft | Indian River County Sheriff'S Office Vero Beach, Florida |
Standard | 2018-11-21 | ValidFAA registration status code V: Valid registration. All codes |
| N555TH | Bell 206B |
Rotorcraft | Restricted | 2018-10-18 | ValidFAA registration status code V: Valid registration. All codes | |
| N550JM | Hughes Helicopters Inc 369E |
Rotorcraft | National Aggregates INC Malvern, Ohio |
Standard | 2018-09-24 | ValidFAA registration status code V: Valid registration. All codes |
| N874M | Bell 206B |
Rotorcraft | Anastasia Mosquito Control District Saint Augustine, Florida |
Multiple | 2018-08-25 | ValidFAA registration status code V: Valid registration. All codes |
| N21470 | Bell 206B |
Rotorcraft | Southwest Heliservices LLC Mesa, Arizona |
Standard | 2018-08-01 | ValidFAA registration status code V: Valid registration. All codes |
| N206JZ | Bell 206B |
Rotorcraft | Mercer-Fraser CO Eureka, California |
Standard | 2018-07-16 | ValidFAA registration status code V: Valid registration. All codes |
| N7242N | Agusta Spa A109A II |
Rotorcraft | Maverick Jet Leasing INC Wilmington, Delaware |
Standard | 2018-06-27 | ValidFAA registration status code V: Valid registration. All codes |
| N400MB | Mcdonnell Douglas Helicopter 369E |
Rotorcraft | Precision Heli-Support LLC Mesa, Arizona |
Standard | 2018-04-24 | ValidFAA registration status code V: Valid registration. All codes |
| N695MC | Bell 206B |
Rotorcraft | Tom Cline Helicopter LLC Lake Ozark, Missouri |
Standard | 2018-04-05 | ValidFAA registration status code V: Valid registration. All codes |
| N3202D | Bell 206B |
Rotorcraft | Papa Mike Aviation LLC Dousman, Wisconsin |
Standard | 2018-02-16 | ValidFAA registration status code V: Valid registration. All codes |
| N47HH | Bell 206B |
Rotorcraft | Jkt LLC Douglas, Wyoming |
Standard | 2018-02-15 | ValidFAA registration status code V: Valid registration. All codes |
| N520M | Bell 206B |
Rotorcraft | Derstine Air Service LLC Souderton, Pennsylvania |
Standard | 2018-01-25 | ValidFAA registration status code V: Valid registration. All codes |
| N701HA | Bell 206B |
Rotorcraft | Helo N701Ha LLC Richmond, Virginia |
Standard | 2018-01-12 | ValidFAA registration status code V: Valid registration. All codes |
| N652BB | Bell 206B |
Rotorcraft | Agricultural Air Services LLC Jupiter, Florida |
Standard | 2018-01-09 | ValidFAA registration status code V: Valid registration. All codes |
| N20NM | Agusta Spa A109C |
Rotorcraft | Obrien Helicopters INC Fort Myers, Florida |
Standard | 2017-12-19 | ValidFAA registration status code V: Valid registration. All codes |
| N60NM | Agusta Spa A109C |
Rotorcraft | Obrien Helicopters INC Fort Myers, Florida |
Standard | 2017-12-19 | ValidFAA registration status code V: Valid registration. All codes |
| N49589 | Bell 206B |
Rotorcraft | North Wind Aviation LLC Chelan, Washington |
Restricted | 2017-12-12 | ValidFAA registration status code V: Valid registration. All codes |
| N55BL | Bell 206 |
Rotorcraft | North Wind Aviation LLC Cottage Grove, Oregon |
Restricted | 2017-12-12 | ValidFAA registration status code V: Valid registration. All codes |
| N716VL | Bell 206B |
Rotorcraft | Airwayplanner.Com LLC Sands Point, New York |
Standard | 2017-11-28 | ValidFAA registration status code V: Valid registration. All codes |
| N507TV | Mcdonnell Douglas Helicopter 369E |
Rotorcraft | Shoreline Aircraft Leasing LLC Lewes, Delaware |
Standard | 2017-11-16 | ValidFAA registration status code V: Valid registration. All codes |
| N101MZ | Aerospatiale AS 355F1 |
Rotorcraft | Individual owner | Multiple | 2017-10-10 | Reports overdueFAA registration status code N: Non-citizen corporation that has not returned its flight-hour reports. All codes |
| N225PD | Bell 206B |
Rotorcraft | Baton Rouge Police Department Baton Rouge, Louisiana |
Standard | 2017-08-30 | ValidFAA registration status code V: Valid registration. All codes |
| N820H | Bell Helicopter Textron Canada 206B |
Rotorcraft | Roma Air CORP Belle Glade, Florida |
Multiple | 2017-08-29 | ValidFAA registration status code V: Valid registration. All codes |
| N956KB | Bell 206B-III |
Rotorcraft | Irie Leasing LLC Trenton, New Jersey |
Standard | 2017-08-01 | ValidFAA registration status code V: Valid registration. All codes |
| N430JR | Agusta Spa A109C |
Rotorcraft | Aircraft Holding Solutions LLC Trustee Newark, Delaware |
Standard | 2017-07-26 | ValidFAA registration status code V: Valid registration. All codes |
| N372NS | Garlick Helicopters Inc OH-58A+ |
Rotorcraft | Ewing Flying Service LLC New Roads, Louisiana |
Restricted | 2017-07-25 | ValidFAA registration status code V: Valid registration. All codes |
| N107GG | Bell 206B |
Rotorcraft | Carbon River Helicopter Services LLC Lexington, Kentucky |
Standard | 2017-07-24 | ValidFAA registration status code V: Valid registration. All codes |
| N581SC | Bell 206B |
Rotorcraft | Shelby County Sheriffs Office Columbiana, Alabama |
Standard | 2017-06-16 | ValidFAA registration status code V: Valid registration. All codes |
| N235JP | Bell 206B |
Rotorcraft | Individual owner Texas |
Standard | 2017-05-23 | ValidFAA registration status code V: Valid registration. All codes |
| N467PH | Bell 407 |
Rotorcraft | Phi Health LLC Tempe, Arizona |
Standard | 2017-05-15 | ValidFAA registration status code V: Valid registration. All codes |
| N102UM | Aerospatiale AS-355E TWIN STAR |
Rotorcraft | Timberland Helicopters INC Ashland, Oregon |
Standard | 2017-05-02 | ValidFAA registration status code V: Valid registration. All codes |
| N701KP | Hughes Helicopters Inc HUGHES 369D |
Rotorcraft | Kp Properties LLC Auburn, Washington |
Restricted | 2017-04-28 | ValidFAA registration status code V: Valid registration. All codes |
| N206EG | Bell 206B |
Rotorcraft | Air Lift International LLC Las Vegas, Nevada |
Standard | 2017-04-24 | ValidFAA registration status code V: Valid registration. All codes |
| N4452 | Bell 206B |
Rotorcraft | Bravo Aviation LLC Chicago, Illinois |
Standard | 2017-04-20 | ValidFAA registration status code V: Valid registration. All codes |
| N991MC | Hughes Helicopters Inc HUGHES 369D |
Rotorcraft | Charleston County Mosquito Control North Charleston, South Carolina |
Standard | 2017-04-10 | ValidFAA registration status code V: Valid registration. All codes |
| N774CB | Hughes Helicopters Inc 369E |
Rotorcraft | Cbhelos LLC Chesapeake, Virginia |
Standard | 2017-02-16 | ValidFAA registration status code V: Valid registration. All codes |
| N398WC | Bell 206B |
Rotorcraft | Bucks Air Charters INC Wilmington, Delaware |
Standard | 2017-02-02 | ValidFAA registration status code V: Valid registration. All codes |
| N555SJ | Bell 206A |
Rotorcraft | Apex59 LLC Saint Paul, Minnesota |
Standard | 2017-01-19 | ValidFAA registration status code V: Valid registration. All codes |
Source: FAA Civil Aviation Registry, Releasable Aircraft Database (the engine reference table and each aircraft's engine code), October 5, 2026. Horsepower and thrust are the FAA's figures for the series, not for a particular aircraft.