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 |
|---|---|---|---|---|---|---|
| N987CB | Mcdonnell Douglas Heli Co 500-E |
Rotorcraft | Changstrom CO Pasadena, California |
Standard | 2010-10-19 | ValidFAA registration status code V: Valid registration. All codes |
| N96NW | Bell 206B |
Rotorcraft | Northwest Helicopters INC Olympia, Washington |
Standard | 2010-07-26 | ValidFAA registration status code V: Valid registration. All codes |
| N828HA | Bell 206B |
Rotorcraft | Helo N828Ha LLC Richmond, Virginia |
Standard | 2010-07-15 | ValidFAA registration status code V: Valid registration. All codes |
| N31HM | Hughes Helicopters Inc HUGHES 369D |
Rotorcraft | Dah Aircraft LLC Georgetown, South Carolina |
Multiple | 2010-05-05 | ValidFAA registration status code V: Valid registration. All codes |
| N6MQ | Agusta Spa A109A II |
Rotorcraft | R Consulting & Sales INC Carson City, Nevada |
Standard | 2010-01-19 | ValidFAA registration status code V: Valid registration. All codes |
| N260LR | Bell 206B |
Rotorcraft | Centerline Holdings Camden, Delaware |
Standard | 2010-01-14 | ValidFAA registration status code V: Valid registration. All codes |
| N245AR | Bell 206B |
Rotorcraft | N245Ar LLC Ocala, Florida |
Standard | 2009-12-23 | ValidFAA registration status code V: Valid registration. All codes |
| N16062 | Mcdonnell Douglas Helicopter 369E |
Rotorcraft | Flight Inspection LLC Springdale, Washington |
Standard | 2009-11-18 | ValidFAA registration status code V: Valid registration. All codes |
| N648CA | Bell 206B |
Rotorcraft | Chem-Air LLC Shreveport, Louisiana |
Standard | 2009-07-07 | ValidFAA registration status code V: Valid registration. All codes |
| N206BW | Bell 206B |
Rotorcraft | Individual owner Alabama |
Standard | 2009-03-10 | ValidFAA registration status code V: Valid registration. All codes |
| N710AC | Aerospatiale AS 355F1 |
Rotorcraft | Jbd Enterprises INC Englewood, Colorado |
Standard | 2009-03-09 | ValidFAA registration status code V: Valid registration. All codes |
| N1076G | Bell 206B |
Rotorcraft | Henderson Aviation CO Junction City, Oregon |
Standard | 2008-10-16 | ValidFAA registration status code V: Valid registration. All codes |
| N822LJ | Summa Corp 369HS |
Rotorcraft | Caribe Helicopters INC Coral Gables, Florida |
Standard | 2008-10-09 | ValidFAA registration status code V: Valid registration. All codes |
| N16715 | Bell 206B |
Rotorcraft | Cahaba Forestry Services LLC Flowood, Mississippi |
Standard | 2008-05-30 | ValidFAA registration status code V: Valid registration. All codes |
| N355AG | Aerospatiale AS 355F1 |
Rotorcraft | Hover-Views Unlimited INC Syosset, New York |
Standard | 2008-05-19 | ValidFAA registration status code V: Valid registration. All codes |
| N502CH | Hughes Helicopters Inc HUGHES 369D |
Rotorcraft | Vertol Systems CO INC Destin, Florida |
Standard | 2008-04-02 | ValidFAA registration status code V: Valid registration. All codes |
| N206BX | Bell 206B |
Rotorcraft | Coastal Helicopters INC Panama City, Florida |
Standard | 2007-08-03 | ValidFAA registration status code V: Valid registration. All codes |
| N58003 | Bell 206B |
Rotorcraft | San Juan Aviation LLC Wilmington, Delaware |
Standard | 2007-05-18 | ValidFAA registration status code V: Valid registration. All codes |
| N109MM | Agusta Spa A109A II |
Rotorcraft | Airborne Leasing INC Sylmar, California |
Standard | 2007-04-11 | ValidFAA registration status code V: Valid registration. All codes |
| N595AE | Bell Helicopter Textron 206L-1 |
Rotorcraft | Air Evac Ems INC O Fallon, Missouri |
Standard | 2006-12-05 | ValidFAA registration status code V: Valid registration. All codes |
| N369HE | Hughes 369HE |
Rotorcraft | N369He LLC Wickenburg, Arizona |
Standard | 2006-08-18 | ValidFAA registration status code V: Valid registration. All codes |
| N250CA | Bell 206B |
Rotorcraft | Delta Whiskey LLC Somers, Montana |
Multiple | 2006-05-24 | ValidFAA registration status code V: Valid registration. All codes |
| N2060N | Bell 206B |
Rotorcraft | Scotts Helicopter Service INC Le Sueur, Minnesota |
Restricted | 2006-05-10 | ValidFAA registration status code V: Valid registration. All codes |
| N206TA | Bell 206B |
Rotorcraft | Tomlinson Aviation INC Ormond Beach, Florida |
Standard | 2006-04-20 | ValidFAA registration status code V: Valid registration. All codes |
| N912PC | Bell OH-58C |
Rotorcraft | Tri-Rotor Spray & Chemical Ulysses, Kansas |
Restricted | 2005-10-07 | ValidFAA registration status code V: Valid registration. All codes |
| N988DF | Hughes Helicopters Inc HUGHES 369D |
Rotorcraft | County Council of Beaufort County South Carolina Beaufort, South Carolina |
Restricted | 2005-08-11 | ValidFAA registration status code V: Valid registration. All codes |
| N345RR | Bell 206B |
Rotorcraft | Chemair Helicopters INC Jefferson, Wisconsin |
Multiple | 2005-08-09 | ValidFAA registration status code V: Valid registration. All codes |
| N9YJ | Bell 206B |
Rotorcraft | Helicopters INC Linden, New Jersey |
Experimental | 2005-07-28 | ValidFAA registration status code V: Valid registration. All codes |
| N117HK | Bell 206B |
Rotorcraft | Settan CORP Goleta, California |
Standard | 2005-03-14 | ValidFAA registration status code V: Valid registration. All codes |
| N206ZZ | Bell 206B |
Rotorcraft | Av Enterprises INC Bozeman, Montana |
Standard | 2005-02-10 | ValidFAA registration status code V: Valid registration. All codes |
| N118FW | Bell 206B |
Rotorcraft | Florida Fish & Wildlife Conservation Commission Lakeland, Florida |
Standard | 2005-02-07 | ValidFAA registration status code V: Valid registration. All codes |
| N842JH | Hughes Helicopters Inc 369E |
Rotorcraft | Jack Harter Helicopters INC Lihue, Hawaii |
Standard | 2004-11-17 | ValidFAA registration status code V: Valid registration. All codes |
| N197AA | Bell 206B |
Rotorcraft | Chem-Air INC Shreveport, Louisiana |
Restricted | 2004-11-09 | ValidFAA registration status code V: Valid registration. All codes |
| N241JH | Mcdonnell Douglas Helicopter 369E |
Rotorcraft | Chatham County Mosquito Control Savannah, Georgia |
Standard | 2004-10-01 | ValidFAA registration status code V: Valid registration. All codes |
| N868KK | Bell 206B |
Rotorcraft | Coastal Helicopters INC Panama City, Florida |
Restricted | 2004-09-17 | ValidFAA registration status code V: Valid registration. All codes |
| N206RY | Bell 206B |
Rotorcraft | East Tennessee Helicopters INC Butler, Tennessee |
Standard | 2004-08-30 | ValidFAA registration status code V: Valid registration. All codes |
| N415WC | Hughes Helicopters Inc 369E |
Rotorcraft | Wilson Construction CO Canby, Oregon |
Standard | 2004-07-14 | ValidFAA registration status code V: Valid registration. All codes |
| N2277A | Bell 206B |
Rotorcraft | Mountain Helicopters LLC Salt Lake City, Utah |
Standard | 2004-05-03 | ValidFAA registration status code V: Valid registration. All codes |
| N8YJ | Bell 206B |
Rotorcraft | Helicopters INC Cahokia, Illinois |
Standard | 2004-01-29 | ValidFAA registration status code V: Valid registration. All codes |
| N13KJ | Mcdonnell Douglas Helicopter 369E |
Rotorcraft | Individual owner Utah |
Standard | 2004-01-22 | ValidFAA registration status code V: Valid registration. All codes |
| N818RL | Bell 206B |
Rotorcraft | Door To Door Aviation LLC Wilmington, Delaware |
Standard | 2003-12-05 | ValidFAA registration status code V: Valid registration. All codes |
| N520AN | Mcdonnell Douglas Helicopter 500N |
Rotorcraft | Heliservices LLC Wilmington, Delaware |
Standard | 2003-07-09 | ValidFAA registration status code V: Valid registration. All codes |
| N5TV | Bell 206B |
Rotorcraft | Helicopters INC Linden, New Jersey |
Standard | 2003-06-23 | ValidFAA registration status code V: Valid registration. All codes |
| N3YJ | Bell 206B |
Rotorcraft | Helicopters INC Linden, New Jersey |
Standard | 2003-03-26 | ValidFAA registration status code V: Valid registration. All codes |
| N11ZX | Hughes 369HS |
Rotorcraft | Big Bird Leasing INC Saint Peter, Minnesota |
Multiple | 2002-10-31 | ValidFAA registration status code V: Valid registration. All codes |
| N46EE | Mcdonnell Douglas Helicopter 369E |
Rotorcraft | United States Department of Agriculture Cedar City, Utah |
Standard | 2002-10-16 | ValidFAA registration status code V: Valid registration. All codes |
| N3196G | Bell 206B |
Rotorcraft | USA Helicopter INC West Winfield, New York |
Restricted | 2002-09-17 | ValidFAA registration status code V: Valid registration. All codes |
| N2061J | Bell 206B |
Rotorcraft | Hillcrest Aircraft CO INC Lewiston, Idaho |
Standard | 2002-08-14 | ValidFAA registration status code V: Valid registration. All codes |
| N911AL | Bell 407 |
Rotorcraft | Air Methods LLC Greenwood Village, Colorado |
Standard | 2002-07-11 | ValidFAA registration status code V: Valid registration. All codes |
| N64RS | Md Helicopters Inc 369E |
Rotorcraft | Rainbow Air INC Niagara Falls, New York |
Standard | 2002-06-25 | ValidFAA registration status code V: Valid registration. All codes |
| N118TV | Bell 206B |
Rotorcraft | Interstate Helicopter INC Bethany, Oklahoma |
Standard | 2002-06-14 | ValidFAA registration status code V: Valid registration. All codes |
| N11056 | Hughes Helicopters Inc HUGHES 369D |
Rotorcraft | Northwest Helicopters I INC Olympia, Washington |
Standard | 2002-03-07 | ValidFAA registration status code V: Valid registration. All codes |
| N7UM | Hughes 369HS |
Rotorcraft | Sabe Aviation INC Santa Monica, California |
Standard | 2002-02-20 | ValidFAA registration status code V: Valid registration. All codes |
| N302HF | Mcdonnell Douglas Helicopter 500N |
Rotorcraft | City and County of Honolulu Honolulu, Hawaii |
Standard | 2001-12-10 | ValidFAA registration status code V: Valid registration. All codes |
| N59579 | Bell 206B |
Rotorcraft | American AG Aviation INC Five Points, California |
Multiple | 2001-12-05 | ValidFAA registration status code V: Valid registration. All codes |
| N304PD | Bell 206B |
Rotorcraft | City of Tucson Police Department Tucson, Arizona |
Standard | 2001-10-31 | ValidFAA registration status code V: Valid registration. All codes |
| N321PE | Mcdonnell Douglas Helicopter 369E |
Rotorcraft | Radnor Construction of Delaware INC Allentown, Pennsylvania |
Standard | 2001-10-24 | ValidFAA registration status code V: Valid registration. All codes |
| N206RW | Bell 206B-III |
Rotorcraft | United States Department of Interior Boise, Idaho |
Standard | 2001-08-08 | ValidFAA registration status code V: Valid registration. All codes |
| N63SH | Bell 206B |
Rotorcraft | Maine Helicopters INC Whitefield, Maine |
Multiple | 2001-08-08 | ValidFAA registration status code V: Valid registration. All codes |
| N84CK | Bell 206B |
Rotorcraft | Croman CORP White City, Oregon |
Standard | 2001-06-06 | ValidFAA registration status code V: Valid registration. All codes |
| N5010P | Bell 206B |
Rotorcraft | Co-owned owner California |
Restricted | 2001-04-10 | ValidFAA registration status code V: Valid registration. All codes |
| N23TV | Bell 206B |
Rotorcraft | Kd Helicopters INC Shingleton, Michigan |
Standard | 2000-10-31 | ValidFAA registration status code V: Valid registration. All codes |
| N910PG | Md Helicopters Inc 500N |
Rotorcraft | Prince Georges County College Park, Maryland |
Standard | 2000-09-29 | ValidFAA registration status code V: Valid registration. All codes |
| N911PG | Md Helicopters Inc 500N |
Rotorcraft | Prince Georges County College Park, Maryland |
Standard | 2000-09-29 | ValidFAA registration status code V: Valid registration. All codes |
| N82F | Bell 206B-III |
Rotorcraft | Helicopters INC Cahokia, Illinois |
Standard | 2000-09-19 | ValidFAA registration status code V: Valid registration. All codes |
| N89PH | Bell 206B |
Rotorcraft | Provine Helicopter Service INC Greenwood, Mississippi |
Standard | 2000-09-18 | ValidFAA registration status code V: Valid registration. All codes |
| N100LM | Hiller UH-12E |
Rotorcraft | Haddock Flying Service INC Salters, South Carolina |
Multiple | 2000-09-12 | ValidFAA registration status code V: Valid registration. All codes |
| N67CL | Bell 206B |
Rotorcraft | Helicopters INC Linden, New Jersey |
Standard | 2000-06-27 | ValidFAA registration status code V: Valid registration. All codes |
| N81PH | Bell 206B |
Rotorcraft | Provine Helicopter Service INC Greenwood, Mississippi |
Multiple | 2000-04-10 | ValidFAA registration status code V: Valid registration. All codes |
| N62F | Bell 206B |
Rotorcraft | Helicopters INC Linden, New Jersey |
Standard | 2000-04-05 | ValidFAA registration status code V: Valid registration. All codes |
| N52FA | Bell 206B |
Rotorcraft | Zma LLC North Little Rock, Arkansas |
Standard | 2000-03-17 | ValidFAA registration status code V: Valid registration. All codes |
| N2275Q | Bell 206B |
Rotorcraft | Sierra Bravo Aviation INC San Francisco, California |
Standard | 1999-11-17 | ValidFAA registration status code V: Valid registration. All codes |
| N369PB | Hughes Helicopters Inc HUGHES 369D |
Rotorcraft | Helicopter Aviation Services & Leasing INC Miami, Florida |
Standard | 1999-09-03 | ValidFAA registration status code V: Valid registration. All codes |
| N355FF | Aerospatiale AS 355F1 |
Rotorcraft | Individual owner New York |
Standard | 1999-07-19 | ValidFAA registration status code V: Valid registration. All codes |
| N85CA | Bell 206B |
Rotorcraft | Individual owner Minnesota |
Standard | 1999-04-21 | ValidFAA registration status code V: Valid registration. All codes |
| N130BH | Bell 206B II |
Rotorcraft | Obrien Helicopters INC Lehigh Acres, Florida |
Standard | 1999-03-30 | ValidFAA registration status code V: Valid registration. All codes |
| N407KB | Bell 407 |
Rotorcraft | Orange County Sheriffs Office Orlando, Florida |
Standard | 1998-10-30 | ValidFAA registration status code V: Valid registration. All codes |
| N7173S | Hiller UH-12E |
Rotorcraft | Craig Helicopters INC Craig, Colorado |
Standard | 1998-08-29 | ValidFAA registration status code V: Valid registration. All codes |
| N9196F | Hughes 369HS |
Rotorcraft | Individual owner Texas |
Standard | 1998-08-21 | ValidFAA registration status code V: Valid registration. All codes |
| N686AM | Bell 407 |
Rotorcraft | Air Methods LLC Greenwood Village, Colorado |
Standard | 1998-04-09 | ValidFAA registration status code V: Valid registration. All codes |
| N444JB | Bell OH-58A |
Rotorcraft | Air First LLC Pembroke, New Hampshire |
Restricted | 1997-10-28 | ValidFAA registration status code V: Valid registration. All codes |
| N41EW | Bell 206B |
Rotorcraft | Memphis Police Department Memphis, Tennessee |
Standard | 1997-09-27 | ValidFAA registration status code V: Valid registration. All codes |
| N709AC | Aerospatiale AS 355F1 |
Rotorcraft | Jbd Enterprises INC Englewood, Colorado |
Standard | 1997-09-06 | ValidFAA registration status code V: Valid registration. All codes |
| N800JB | Bell 206B |
Rotorcraft | Helicopter Applicators LLC Pembroke, New Hampshire |
Multiple | 1997-08-23 | ValidFAA registration status code V: Valid registration. All codes |
| N206WA | Bell 206B |
Rotorcraft | Chem Air LLC Shreveport, Louisiana |
Restricted | 1997-05-19 | ValidFAA registration status code V: Valid registration. All codes |
| N921SD | Mcdonnell Douglas Helicopter 369E |
Rotorcraft | County of Fresno Fresno, California |
Standard | 1997-05-15 | ValidFAA registration status code V: Valid registration. All codes |
| N655HA | Bell OH-58A |
Rotorcraft | Helicopter Applicators INC Gettysburg, Pennsylvania |
Restricted | 1997-04-29 | ValidFAA registration status code V: Valid registration. All codes |
| N922SD | Mcdonnell Douglas Helicopter 369E |
Rotorcraft | County of Fresno Fresno, California |
Standard | 1997-04-15 | ValidFAA registration status code V: Valid registration. All codes |
| N29S | Bell 206B |
Rotorcraft | Helicopters INC Cahokia, Illinois |
Standard | 1997-02-06 | ValidFAA registration status code V: Valid registration. All codes |
| N94VM | Bell 206B |
Rotorcraft | Co-owned owner Washington |
Standard | 1996-10-18 | ValidFAA registration status code V: Valid registration. All codes |
| N656HA | Bell OH-58C |
Rotorcraft | Helicopter Applicators INC Gettysburg, Pennsylvania |
Restricted | 1996-05-09 | ValidFAA registration status code V: Valid registration. All codes |
| N67968 | Bell 206B |
Rotorcraft | United States Army Redstone Arsenal, Alabama |
Standard | 1996-05-08 | ValidFAA registration status code V: Valid registration. All codes |
| N67950 | Bell 206B |
Rotorcraft | United States Army Redstone Arsenal, Alabama |
Standard | 1996-04-29 | ValidFAA registration status code V: Valid registration. All codes |
| N357MC | Bell 206B |
Rotorcraft | Hillsborough County Board of County Commissioners Tampa, Florida |
Standard | 1996-02-21 | ValidFAA registration status code V: Valid registration. All codes |
| N67669 | Bell 206B |
Rotorcraft | United States Army Redstone Arsenal, Alabama |
Standard | 1995-06-02 | ValidFAA registration status code V: Valid registration. All codes |
| N67580 | Bell 206B |
Rotorcraft | United States Army Fort Rucker, Alabama |
Standard | 1995-03-14 | ValidFAA registration status code V: Valid registration. All codes |
| N114HD | Hughes Helicopters Inc HUGHES 369D |
Rotorcraft | Windward Aviation INC Puunene, Hawaii |
Multiple | 1994-09-29 | ValidFAA registration status code V: Valid registration. All codes |
| N3TV | Bell 206B |
Rotorcraft | Mission Air Capital Services L L C San Antonio, Texas |
Restricted | 1994-09-27 | ValidFAA registration status code V: Valid registration. All codes |
| N67428 | Bell 206B |
Rotorcraft | United States Army Redstone Arsenal, Alabama |
Standard | 1994-08-25 | ValidFAA registration status code V: Valid registration. All codes |
| N97RR | Bell 206B |
Rotorcraft | County of Ocean Barnegat, New Jersey |
Multiple | 1994-02-22 | 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.