Allison (Rolls-Royce) 250 series
446 aircraft on the U.S. register carry an Allison (Rolls-Royce) 250 series engine, rated at about 250 horsepower. The Bell 206 JetRanger and LongRanger is the model most often fitted with it (243 aircraft). The aircraft carrying it were built between 1962 and 2005.
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 series (6 codes). FAA spellings: 250 SER 250HP · 250 SER 250HP · 250 SER 317HP · 250 SER 400HP · 250 SERIES · 250 SER.
Fitted to model families
Bell 206 JetRanger and LongRanger243Hughes Helicopters Inc HUGHES 36952Hughes 369 500 series helicopters34Bell 40723Bell 4716Hiller UH-1215Enstrom Helicopter Corp 48012Bell 4308Beechcraft A36 Bonanza7Fairchild Hiller FH-11005Cessna P210 Pressurized Centurion3Siai-Marchetti SM-10193
Bell 206 JetRanger and LongRanger · Hughes Helicopters Inc HUGHES 369 · Hughes 369 500 series helicopters · Bell 407 · Bell 47 · Hiller UH-12 · Enstrom Helicopter Corp 480 · Bell 430 · Beechcraft A36 Bonanza · Fairchild Hiller FH-1100
Where they are owner's state
Delaware46California43Florida32Texas30Missouri18Louisiana18Oregon17Alaska17Montana16Washington12
Kind of aircraft
Helicopters422 (95%)Piston singles16 (4%)Turboprops7 (2%)Piston twins1 (0.2%)
When the aircraft were built by decade
Connections how this engine series links to the rest of the register
Fitted to
- Bell 206 JetRanger and LongRanger 243 with this engine series
- Hughes Helicopters Inc HUGHES 369 52 with this engine series
- Hughes 369 500 series helicopters 34 with this engine series
- Bell 407 23 with this engine series
- Bell 47 16 with this engine series
- Hiller UH-12 15 with this engine series
- Enstrom Helicopter Corp 480 12 with this engine series
- Bell 430 8 with this engine series
Where they are
- Delaware 46 of these aircraft
- California 43 of these aircraft
- Florida 32 of these aircraft
- Texas 30 of these aircraft
- Missouri 18 of these aircraft
Biggest operators
- Air Evac Ems INC 17 of these aircraft
- Temsco Helicopters INC 6 of these aircraft
- Summit Helicopters INC 4 of these aircraft
- Ranger Aviation Leasing LLC 4 of these aircraft
- Magnum Aviation LLC 4 of these aircraft
Analytics
These connections as data: /graph/engine/allison-rolls-royce-250-series.json · about the eFlight graph.
Aircraft newest certificates first · 446
| Tail no. | Maker and model | Group | Owner and base | Certificate | Registered | Status |
|---|---|---|---|---|---|---|
| N90209 | Bell 206B |
Rotorcraft | Individual owner Washington |
Standard | 1994-03-24 | ValidFAA registration status code V: Valid registration. All codes |
| N4227E | Bell Helicopter Textron 206L-1 |
Rotorcraft | Monarch Enterprises INC Kirkland, Washington |
Standard | 1994-02-09 | ValidFAA registration status code V: Valid registration. All codes |
| N1088N | Hughes Helicopters Inc HUGHES 369D |
Rotorcraft | Temsco Helicopters INC Ketchikan, Alaska |
Standard | 1993-06-24 | ValidFAA registration status code V: Valid registration. All codes |
| N9016F | Hughes 369HS |
Rotorcraft | High Shines INC Earl Park, Indiana |
Standard | 1993-06-08 | ValidFAA registration status code V: Valid registration. All codes |
| N102NJ | Bell 206B |
Rotorcraft | Usda Forest Service Fepp Trenton, New Jersey |
Standard | 1993-05-03 | ValidFAA registration status code V: Valid registration. All codes |
| N11054 | Hughes Helicopters Inc HUGHES 369D |
Rotorcraft | Winco INC Aurora, Oregon |
Standard | 1993-03-29 | ValidFAA registration status code V: Valid registration. All codes |
| N3094G | Bell 47G-4 |
Rotorcraft | Scotts Helicopter Services INC Le Sueur, Minnesota |
Multiple | 1993-02-02 | ValidFAA registration status code V: Valid registration. All codes |
| N25LB | Bell 47G-5A |
Rotorcraft | Scotts Helicopter Services INC Le Sueur, Minnesota |
Restricted | 1993-01-04 | ValidFAA registration status code V: Valid registration. All codes |
| N57491 | Bell Helicopter Textron 206L-1 |
Rotorcraft | Monarch Enterprises INC Kirkland, Washington |
Standard | 1992-04-20 | ValidFAA registration status code V: Valid registration. All codes |
| N721KH | Beech A36 |
Fixed-wing, single engine | Individual owner Texas |
Standard | 1991-04-08 | ValidFAA registration status code V: Valid registration. All codes |
| N5052F | Fairchild Hiller FH-1100 |
Rotorcraft | Individual owner Florida |
Standard | 1991-01-07 | ValidFAA registration status code V: Valid registration. All codes |
| N4068G | Bell 206B |
Rotorcraft | Gulf Coast Helicopters INC Pearland, Texas |
Standard | 1990-07-31 | ValidFAA registration status code V: Valid registration. All codes |
| N7168F | Hughes Helicopters Inc HUGHES 369D |
Rotorcraft | Helicopter Minit Men INC Columbus, Ohio |
Standard | 1990-07-24 | ValidFAA registration status code V: Valid registration. All codes |
| N123NC | Bell 206A |
Rotorcraft | North Carolina State Highway Patrol Cary, North Carolina |
Standard | 1990-07-18 | ValidFAA registration status code V: Valid registration. All codes |
| N862MC | Hughes Helicopters Inc HUGHES 369D |
Rotorcraft | Manatee County Mosquito Control District Ellenton, Florida |
Standard | 1990-01-25 | ValidFAA registration status code V: Valid registration. All codes |
| N103NJ | Bell 206A |
Rotorcraft | Usda Forest Service Fepp Trenton, New Jersey |
Multiple | 1988-09-27 | ValidFAA registration status code V: Valid registration. All codes |
| N9913K | Bell 206B |
Rotorcraft | Maine Helicopters INC Whitefield, Maine |
Standard | 1988-06-16 | ValidFAA registration status code V: Valid registration. All codes |
| N9413F | Hughes Helicopters Inc HUGHES 369D |
Rotorcraft | Helicopter Minit Men INC Columbus, Ohio |
Standard | 1988-05-03 | ValidFAA registration status code V: Valid registration. All codes |
| N2928W | Bell 206B |
Rotorcraft | Nova Helicopters INC Ashburn, Virginia |
Standard | 1988-04-11 | ValidFAA registration status code V: Valid registration. All codes |
| N1404W | Bell 206B |
Rotorcraft | Individual owner California |
Standard | 1987-09-01 | ValidFAA registration status code V: Valid registration. All codes |
| N5745Y | Bell Helicopter Textron 206L-1 |
Rotorcraft | Monarch Enterprises INC Kirkland, Washington |
Standard | 1986-10-14 | ValidFAA registration status code V: Valid registration. All codes |
| N573CA | Bell 206B |
Rotorcraft | Chem-Air LLC Shreveport, Louisiana |
Standard | 1986-05-07 | ValidFAA registration status code V: Valid registration. All codes |
| N8NF | Bell 206B |
Rotorcraft | City of Pasadena Pasadena, California |
Standard | 1985-10-28 | ValidFAA registration status code V: Valid registration. All codes |
| N136JS | Bell 206B |
Rotorcraft | Bettencourt Flg Svc INC Atwater, California |
Standard | 1985-02-14 | ValidFAA registration status code V: Valid registration. All codes |
| N59553 | Bell 206B |
Rotorcraft | Sycan CORP Paso Robles, California |
Standard | 1985-01-31 | ValidFAA registration status code V: Valid registration. All codes |
| N1107N | Hughes Helicopters Inc HUGHES 369D |
Rotorcraft | Individual owner California |
Standard | 1982-11-26 | ValidFAA registration status code V: Valid registration. All codes |
| N33QP | Bell 206B |
Rotorcraft | Air Metro Helicopter INC New City, New York |
Standard | 1982-08-20 | ValidFAA registration status code V: Valid registration. All codes |
| N1107P | Hughes Helicopters Inc HUGHES 369D |
Rotorcraft | Temsco Helicopters INC Ketchikan, Alaska |
Standard | 1981-09-09 | ValidFAA registration status code V: Valid registration. All codes |
| N1101N | Hughes Helicopters Inc HUGHES 369D |
Rotorcraft | Lindemann Drilling Company INC Archer City, Texas |
Standard | 1981-08-22 | ValidFAA registration status code V: Valid registration. All codes |
| N58415 | Hughes Helicopters Inc HUGHES 369D |
Rotorcraft | Temsco Helicopters INC Ketchikan, Alaska |
Standard | 1981-08-03 | ValidFAA registration status code V: Valid registration. All codes |
| N535HA | Hiller UH-12E |
Rotorcraft | Summit Helicopters INC Salem, Virginia |
Multiple | 1981-06-18 | ValidFAA registration status code V: Valid registration. All codes |
| N392M | Bell 206A |
Rotorcraft | Usda Forest Service Fepp Helena, Montana |
None on file | 1981-04-02 | ValidFAA registration status code V: Valid registration. All codes |
| N2927W | Bell 206B |
Rotorcraft | Gulf Coast Helicopters INC Pearland, Texas |
Standard | 1980-11-21 | ValidFAA registration status code V: Valid registration. All codes |
| N1091P | Hughes Helicopters Inc HUGHES 369D |
Rotorcraft | Temsco Helicopters INC Ketchikan, Alaska |
Standard | 1980-08-06 | ValidFAA registration status code V: Valid registration. All codes |
| N1091S | Hughes Helicopters Inc HUGHES 369D |
Rotorcraft | Temsco Helicopters INC Ketchikan, Alaska |
Standard | 1980-07-25 | ValidFAA registration status code V: Valid registration. All codes |
| N123RJ | Bell 206A |
Rotorcraft | R J Corman Railroad Co/Bardstown Line Nicholasville, Kentucky |
Restricted | 1979-01-11 | ValidFAA registration status code V: Valid registration. All codes |
| N175HA | Hiller UH-12E |
Rotorcraft | Co-owned owner Oregon |
Multiple | 1978-08-02 | ValidFAA registration status code V: Valid registration. All codes |
| N58191 | Hughes Helicopters Inc HUGHES 369D |
Rotorcraft | Temsco Helicopters INC Ketchikan, Alaska |
Standard | 1978-07-21 | ValidFAA registration status code V: Valid registration. All codes |
| N148KY | Bell 206B |
Rotorcraft | Commonwealth of Kentucky Frankfort, Kentucky |
Standard | 1975-10-06 | ValidFAA registration status code V: Valid registration. All codes |
| N59495 | Bell 206B |
Rotorcraft | Knutson Flying Service INC Tioga, North Dakota |
Restricted | 1974-05-24 | ValidFAA registration status code V: Valid registration. All codes |
| N10729 | Bell 206B |
Rotorcraft | Individual owner Oregon |
Standard | CanceledFAA registration status code 18: Sale reported, canceled. All codes | |
| N144SW | Bell 206B-III |
Rotorcraft | Interstate Helicopters INC Bethany, Oklahoma |
Multiple | ValidFAA registration status code V: Valid registration. All codes | |
| N157BA | Beech A36 |
Fixed-wing, single engine | Airmart INC Lexington, Kentucky |
Standard | ValidFAA registration status code V: Valid registration. All codes | |
| N38885 | Bell Helicopter Textron 206L-1 |
Rotorcraft | Individual owner Wisconsin |
Standard | PendingFAA registration status code R: Registration pending. All codes | |
| N581FH | Fairchild Hiller FH-1100 |
Rotorcraft | Individual owner Indiana |
Standard | Sale reportedFAA registration status code 7. All codes | |
| N975TR | Bell 206B |
Rotorcraft | Bas Part Sales LLC Greeley, Colorado |
Multiple | ValidFAA registration status code V: Valid registration. All codes |
Previous Page 5 of 5
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.