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 |
|---|---|---|---|---|---|---|
| N86DX | Bell 206B |
Rotorcraft | Topside Aviation INC Brasstown, North Carolina |
Multiple | 2017-01-04 | ValidFAA registration status code V: Valid registration. All codes |
| N49TJ | Hughes 369HS |
Rotorcraft | Shoreline Aircraft Leasing LLC Lewes, Delaware |
Multiple | 2017-01-03 | ValidFAA registration status code V: Valid registration. All codes |
| N1602L | Mcdonnell Douglas Helicopter 369E |
Rotorcraft | Saxton Helicopter Leasing LLC Plymouth, Michigan |
Standard | 2016-10-26 | ValidFAA registration status code V: Valid registration. All codes |
| N46CL | Bell 206B-III |
Rotorcraft | Helicopters INC Wilmington, Delaware |
Standard | 2016-09-22 | ValidFAA registration status code V: Valid registration. All codes |
| N8QD | Bell 206B |
Rotorcraft | Helicopters INC Wilmington, Delaware |
Standard | 2016-09-22 | ValidFAA registration status code V: Valid registration. All codes |
| N26MV | Bell 206B |
Rotorcraft | Tjr LTD Excelsior, Minnesota |
Standard | 2016-09-21 | ValidFAA registration status code V: Valid registration. All codes |
| N369SD | Md Helicopters Inc 369E |
Rotorcraft | Pyramid Property Development and Management LLC Cedar Lake, Indiana |
Standard | 2016-09-06 | ValidFAA registration status code V: Valid registration. All codes |
| N65150 | Bell OH-58A |
Rotorcraft | Burns Craft LLC Wilmington, Delaware |
Experimental | 2016-08-24 | ValidFAA registration status code V: Valid registration. All codes |
| N500FC | Mcdonnell Douglas Helicopter 369E |
Rotorcraft | Ferguson and Sons Construction LLC Emmett, Idaho |
Multiple | 2016-08-22 | ValidFAA registration status code V: Valid registration. All codes |
| N307KH | Bell 407 |
Rotorcraft | Gm Leasing Company LLC Broussard, Louisiana |
Standard | 2016-08-09 | ValidFAA registration status code V: Valid registration. All codes |
| N292BH | Bell 206B |
Rotorcraft | ABC Helicopters INC Jefferson, Wisconsin |
Standard | 2016-05-16 | ValidFAA registration status code V: Valid registration. All codes |
| N78NL | Bell 206B |
Rotorcraft | H&G Farms INC Corcoran, California |
Restricted | 2016-05-16 | ValidFAA registration status code V: Valid registration. All codes |
| N5200W | Hughes Helicopters Inc 369E |
Rotorcraft | Emerald City Aircraft Leasing INC Port Orchard, Washington |
Standard | 2016-04-19 | ValidFAA registration status code V: Valid registration. All codes |
| N202SC | Aerospatiale AS355F TWINSTAR |
Rotorcraft | Ns Air Leasing LLC Wilmington, Delaware |
Standard | 2016-03-25 | ValidFAA registration status code V: Valid registration. All codes |
| N499K | Cessna T207A |
Fixed-wing, single engine | Copper River Airmotive LLC Copper Center, Alaska |
Multiple | 2016-03-07 | ValidFAA registration status code V: Valid registration. All codes |
| N78ME | Bell 206B |
Rotorcraft | Elliott Enterprises Group LLC Wilmington, Delaware |
Standard | 2016-02-29 | ValidFAA registration status code V: Valid registration. All codes |
| N36MQ | Bell 206B |
Rotorcraft | Rotor LLC Dover, Delaware |
Standard | 2016-02-17 | ValidFAA registration status code V: Valid registration. All codes |
| N618PC | Bell 206B |
Rotorcraft | Individual owner Alaska |
Standard | 2016-01-27 | ValidFAA registration status code V: Valid registration. All codes |
| N555PP | Bell 206B |
Rotorcraft | El Aero Services LLC Elko, Nevada |
Standard | 2015-12-01 | ValidFAA registration status code V: Valid registration. All codes |
| N67817 | Bell 206B |
Rotorcraft | King County Sheriff'S Office Seattle, Washington |
Standard | 2015-11-13 | ValidFAA registration status code V: Valid registration. All codes |
| N3211N | Bell 206B |
Rotorcraft | Tumbleweed Leasing CO INC Salt Lake City, Utah |
Standard | 2015-10-19 | ValidFAA registration status code V: Valid registration. All codes |
| N301SD | Hughes 369A |
Rotorcraft | Harrison County Sheriffs Department Gulfport, Mississippi |
Standard | 2015-10-07 | ValidFAA registration status code V: Valid registration. All codes |
| N488BC | Bell 206B |
Rotorcraft | Butte County Sheriffs Office Oroville, California |
Standard | 2015-10-02 | ValidFAA registration status code V: Valid registration. All codes |
| N67880 | Bell 206B |
Rotorcraft | King County Sheriffs Office Seattle, Washington |
Standard | 2015-09-10 | ValidFAA registration status code V: Valid registration. All codes |
| N67952 | Bell 206B |
Rotorcraft | City of Jackson Tennessee Jackson, Tennessee |
Standard | 2015-09-10 | ValidFAA registration status code V: Valid registration. All codes |
| N624K | Bell 206B |
Rotorcraft | Rotary Flight LLC Wilmington, Delaware |
Standard | 2015-08-24 | ValidFAA registration status code V: Valid registration. All codes |
| N500RT | Hughes 369HS |
Rotorcraft | Cessna 210 LLC Waynesville, Missouri |
Standard | 2015-08-18 | ValidFAA registration status code V: Valid registration. All codes |
| N501JS | Bell 206B |
Rotorcraft | Shelby County Sheriffs Office Columbiana, Alabama |
Standard | 2015-08-14 | ValidFAA registration status code V: Valid registration. All codes |
| N67939 | Bell 206B |
Rotorcraft | City of Jackson Tennessee Jackson, Tennessee |
Standard | 2015-08-04 | ValidFAA registration status code V: Valid registration. All codes |
| N813RR | Bell 206B |
Rotorcraft | Indian River County Sheriffs Office Vero Beach, Florida |
Standard | 2015-08-04 | ValidFAA registration status code V: Valid registration. All codes |
| N895SP | Bell 206B |
Rotorcraft | West Virginia State Police South Charleston, West Virginia |
Standard | 2015-07-31 | ValidFAA registration status code V: Valid registration. All codes |
| N53BN | Hughes OH-6 |
Rotorcraft | Smith Air LLC Shedd, Oregon |
Multiple | 2015-07-21 | ValidFAA registration status code V: Valid registration. All codes |
| N890SP | Bell 206B |
Rotorcraft | West Virginia State Police South Charleston, West Virginia |
Standard | 2015-07-10 | ValidFAA registration status code V: Valid registration. All codes |
| N9276F | Hughes Helicopters Inc HUGHES 369D |
Rotorcraft | Heli-Flite INC Corona, California |
Standard | 2015-06-23 | ValidFAA registration status code V: Valid registration. All codes |
| N113RL | Bell 206B-III |
Rotorcraft | Marks Aviation Group LLC Lafayette, Louisiana |
Standard | 2015-06-10 | ValidFAA registration status code V: Valid registration. All codes |
| N24TV | Bell 206B |
Rotorcraft | Apexheli Oregan INC Florence, Oregon |
Standard | 2015-05-21 | ValidFAA registration status code V: Valid registration. All codes |
| N425WC | Mcdonnell Douglas Helicopter 369E |
Rotorcraft | Wilson Construction CO INC Canby, Oregon |
Standard | 2015-05-20 | ValidFAA registration status code V: Valid registration. All codes |
| N463RA | Bell 206B |
Rotorcraft | Ranger Aviation Leasing LLC Wilmington, Delaware |
Standard | 2015-05-12 | ValidFAA registration status code V: Valid registration. All codes |
| N19NG | Bell 206L |
Rotorcraft | Norgreen Aviation LLC Kirkland, Washington |
Standard | 2015-05-05 | ValidFAA registration status code V: Valid registration. All codes |
| N1604Z | Mcdonnell Douglas Helicopter 369E |
Rotorcraft | Dept of Fish Wildlife and Parks Helena, Montana |
Restricted | 2015-04-09 | ValidFAA registration status code V: Valid registration. All codes |
| N109XP | Agusta Spa A109A |
Rotorcraft | National Test Pilot School Mojave, California |
Standard | 2015-03-20 | ValidFAA registration status code V: Valid registration. All codes |
| N206MJ | Bell 206B |
Rotorcraft | Individual owner Oregon |
Restricted | 2015-03-10 | ValidFAA registration status code V: Valid registration. All codes |
| N107PH | Bell 206B |
Rotorcraft | Southern Helicopter Service INC Millington, Tennessee |
Standard | 2014-11-24 | ValidFAA registration status code V: Valid registration. All codes |
| N261SP | Bell 206B |
Rotorcraft | Mbm Aviation Consultants INC Wilmington, Delaware |
Standard | 2014-09-25 | ValidFAA registration status code V: Valid registration. All codes |
| N913RL | Bell 206B |
Rotorcraft | Aero Leasing INC Medford, Oregon |
Standard | 2014-09-18 | ValidFAA registration status code V: Valid registration. All codes |
| N5733K | Bell 206B |
Rotorcraft | Ecolift CORP San Juan, Puerto Rico |
Standard | 2014-09-11 | ValidFAA registration status code V: Valid registration. All codes |
| N109PB | Agusta Spa A109A II |
Rotorcraft | Individual owner Florida |
Standard | 2014-08-18 | ValidFAA registration status code V: Valid registration. All codes |
| N16050 | Mcdonnell Douglas Helicopter 369E |
Rotorcraft | Venturi Aviation LLC Missoula, Montana |
Standard | 2014-08-13 | ValidFAA registration status code V: Valid registration. All codes |
| N83149 | Bell 206B |
Rotorcraft | Sky Air Center Unlimited LLC Burleson, Texas |
Restricted | 2014-08-08 | ValidFAA registration status code V: Valid registration. All codes |
| N255BP | Bell OH-58A |
Rotorcraft | Victoria County Sheriff Victoria, Texas |
Experimental | 2014-07-23 | ValidFAA registration status code V: Valid registration. All codes |
| N277RL | Bell 206B |
Rotorcraft | Co-owned owner Delaware |
Standard | 2014-07-09 | ValidFAA registration status code V: Valid registration. All codes |
| N327MH | Messerschmitt-Boelkow-Blohm BO-105S |
Rotorcraft | Maritime Helicopters INC Homer, Alaska |
Standard | 2014-06-26 | ValidFAA registration status code V: Valid registration. All codes |
| N90307 | Bell 206B II |
Rotorcraft | Individual owner Washington |
Restricted | 2014-06-20 | ValidFAA registration status code V: Valid registration. All codes |
| N305JE | Hughes Helicopters Inc HUGHES 369D |
Rotorcraft | Dah Aircraft LLC Georgetown, South Carolina |
Standard | 2014-05-28 | ValidFAA registration status code V: Valid registration. All codes |
| N326MH | Messerschmitt BO105CBS |
Rotorcraft | Maritime Helicopters INC Homer, Alaska |
Standard | 2014-04-16 | ValidFAA registration status code V: Valid registration. All codes |
| N48HH | Bell 206B |
Rotorcraft | Varney Aviation LLC Bangor, Maine |
Standard | 2014-04-04 | ValidFAA registration status code V: Valid registration. All codes |
| N221GP | Bell 206B |
Rotorcraft | Chemair Helicopters INC Jefferson, Wisconsin |
Standard | 2014-03-24 | ValidFAA registration status code V: Valid registration. All codes |
| N988LB | Bell 206B |
Rotorcraft | Individual owner Texas |
Standard | 2014-03-12 | ValidFAA registration status code V: Valid registration. All codes |
| N12TH | Mcdonnell Douglas Helicopter 369E |
Rotorcraft | Individual owner Texas |
Standard | 2014-03-11 | ValidFAA registration status code V: Valid registration. All codes |
| N206RV | Bell 206B |
Rotorcraft | Taylor Made Aircraft CO LLC Broomfield, Colorado |
Experimental | 2013-11-20 | ValidFAA registration status code V: Valid registration. All codes |
| N334KC | Bell 206B |
Rotorcraft | Hawk Hollow Farm LLC Brighton, Michigan |
Standard | 2013-09-26 | ValidFAA registration status code V: Valid registration. All codes |
| N166MB | Hughes Helicopters Inc HUGHES 369D |
Rotorcraft | Helicopter Roundup Service LLC Nephi, Utah |
Standard | 2013-09-25 | ValidFAA registration status code V: Valid registration. All codes |
| N175PA | Bell 407 |
Rotorcraft | Mansfield Helifight Milton, Vermont |
Standard | 2013-07-10 | ValidFAA registration status code V: Valid registration. All codes |
| N206SW | Bell 206B |
Rotorcraft | County of Ocean Barnegat, New Jersey |
Multiple | 2013-06-10 | ValidFAA registration status code V: Valid registration. All codes |
| N68PH | Bell 206B |
Rotorcraft | Mercury Aviation INC Flowood, Mississippi |
Standard | 2013-06-05 | ValidFAA registration status code V: Valid registration. All codes |
| N220PD | Mcdonnell Douglas Helicopter 369E |
Rotorcraft | City of Oakland Oakland, California |
Standard | 2013-05-01 | ValidFAA registration status code V: Valid registration. All codes |
| N510PD | Mcdonnell Douglas Helicopter 369E |
Rotorcraft | City of Oakland Oakland, California |
Standard | 2013-05-01 | ValidFAA registration status code V: Valid registration. All codes |
| N206AC | Bell 206B |
Rotorcraft | Airconnor LLC Livingston, Montana |
Multiple | 2013-04-19 | ValidFAA registration status code V: Valid registration. All codes |
| N998SH | Hughes Helicopters Inc HUGHES 369D |
Rotorcraft | Construction Equipment Rentals INC Fallbrook, California |
Standard | 2013-04-16 | ValidFAA registration status code V: Valid registration. All codes |
| N206CJ | Bell 206L-3 |
Rotorcraft | Cb Couch INC Walcott, Arkansas |
Restricted | 2013-04-04 | ValidFAA registration status code V: Valid registration. All codes |
| N808BH | Mcdonnell Douglas Helicopter 369E |
Rotorcraft | Co-owned owner Alaska |
Standard | 2013-04-04 | ValidFAA registration status code V: Valid registration. All codes |
| N707HJ | Bell 206B-III |
Rotorcraft | Industrial Helicopters LLC Lafayette, Louisiana |
Restricted | 2013-04-01 | ValidFAA registration status code V: Valid registration. All codes |
| N1081K | Bell Helicopter Textron 206L-1 |
Rotorcraft | Marks Aviation Group LLC Lafayette, Louisiana |
Standard | 2013-03-26 | ValidFAA registration status code V: Valid registration. All codes |
| N284CA | Bell 206B |
Rotorcraft | Organ Mountain Aviation CO LLC Las Cruces, New Mexico |
Multiple | 2013-02-21 | ValidFAA registration status code V: Valid registration. All codes |
| N1075W | Bell Helicopter Textron 206L-1 |
Rotorcraft | San Juan Aviation LLC Wilmington, Delaware |
Standard | 2012-11-07 | ValidFAA registration status code V: Valid registration. All codes |
| N7250E | Bell 206B |
Rotorcraft | AG Air INC Oakdale, California |
Restricted | 2012-09-27 | ValidFAA registration status code V: Valid registration. All codes |
| N520KY | Mcdonnell Douglas Helicopter 500N |
Rotorcraft | Altadena LLC Birmingham, Alabama |
Standard | 2012-07-30 | ValidFAA registration status code V: Valid registration. All codes |
| N3521T | Bell 206B |
Rotorcraft | Mbm Aviation Consultants INC Wilmington, Delaware |
Multiple | 2012-07-17 | ValidFAA registration status code V: Valid registration. All codes |
| N52Z | Bell 206B |
Rotorcraft | Southern Helicopter Service INC Millington, Tennessee |
Multiple | 2012-06-26 | ValidFAA registration status code V: Valid registration. All codes |
| N2268G | Bell 206B |
Rotorcraft | Crm Investments INC Wilmington, North Carolina |
Standard | 2012-05-15 | ValidFAA registration status code V: Valid registration. All codes |
| N5129N | Hughes Helicopters Inc HUGHES 369D |
Rotorcraft | Individual owner Alaska |
Standard | 2012-05-11 | ValidFAA registration status code V: Valid registration. All codes |
| N306FW | Bell 206B |
Rotorcraft | Egli Air Haul INC King Salmon, Alaska |
Standard | 2012-05-08 | ValidFAA registration status code V: Valid registration. All codes |
| N5NU | Bell 206B |
Rotorcraft | Hawkeye Helicopter LLC Lyndon, Kansas |
Standard | 2012-04-18 | ValidFAA registration status code V: Valid registration. All codes |
| N58JR | Agusta Spa AGUSTA A109 |
Rotorcraft | Integrity Aircraft Title Holdings LLC Portland, Oregon |
Standard | 2012-04-02 | ValidFAA registration status code V: Valid registration. All codes |
| N9984K | Bell 206L |
Rotorcraft | Jl Aviation INC Boring, Oregon |
Multiple | 2012-01-27 | ValidFAA registration status code V: Valid registration. All codes |
| N500KY | Mcdonnell Douglas Helicopter 369E |
Rotorcraft | Rotor Imaging LLC Reading, Pennsylvania |
Standard | 2011-12-29 | ValidFAA registration status code V: Valid registration. All codes |
| N63864 | Bell 206B |
Rotorcraft | Aircraft Guaranty CORP Trustee Oklahoma City, Oklahoma |
Standard | 2011-08-30 | ValidFAA registration status code V: Valid registration. All codes |
| N208ER | Bell 206B |
Rotorcraft | Aircraft Guaranty CORP Trustee Oklahoma City, Oklahoma |
Standard | 2011-08-26 | ValidFAA registration status code V: Valid registration. All codes |
| N38VA | Eurocopter/Canada BO 105LS A-3 |
Rotorcraft | Brown Helicopter INC Pensacola, Florida |
Standard | 2011-08-05 | ValidFAA registration status code V: Valid registration. All codes |
| N10MY | Aerospatiale AS355F2 ECUREUIL |
Rotorcraft | Boston Executive Helicopters LLC Norwood, Massachusetts |
Standard | 2011-06-30 | ValidFAA registration status code V: Valid registration. All codes |
| N9177F | Hughes 369HS |
Rotorcraft | Rotor View INC Wilmington, Delaware |
Standard | 2011-06-29 | ValidFAA registration status code V: Valid registration. All codes |
| N868JB | Bell 206B |
Rotorcraft | Horizon Helicopter LLC Pembroke, New Hampshire |
Standard | 2011-05-18 | ValidFAA registration status code V: Valid registration. All codes |
| N61FM | Agusta-Bell A 109A |
Rotorcraft | Integrity Aircraft Title Holdings LLC Portland, Oregon |
Standard | 2011-05-14 | ValidFAA registration status code V: Valid registration. All codes |
| N8UF | Agusta Spa A109A II |
Rotorcraft | Integrity Aircraft Title Holdings LLC Portland, Oregon |
Standard | 2011-05-14 | ValidFAA registration status code V: Valid registration. All codes |
| N521TC | Hughes 369HE |
Rotorcraft | Tre Aviation CORP Wilmington, Delaware |
Standard | 2011-04-20 | ValidFAA registration status code V: Valid registration. All codes |
| N22823 | Bell 206B |
Rotorcraft | Steve Wright Enterprises INC Alpine, California |
Standard | 2011-02-18 | ValidFAA registration status code V: Valid registration. All codes |
| N217HK | Bell 206B |
Rotorcraft | Individual owner Pennsylvania |
Standard | 2011-01-31 | ValidFAA registration status code V: Valid registration. All codes |
| N11FH | Bell 206B |
Rotorcraft | D H Helicopter INC DBA Sauget, Illinois |
Standard | 2011-01-21 | ValidFAA registration status code V: Valid registration. All codes |
| N4445H | Bell 206B |
Rotorcraft | Bell Textron INC Fort Worth, Texas |
Standard | 2011-01-04 | ValidFAA registration status code V: Valid registration. All codes |
| N81519 | Bell 206B |
Rotorcraft | Bell Textron INC Fort Worth, Texas |
Standard | 2011-01-04 | 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.