The U.S. aircraft register, updated daily
Engines · turboshaft · data as of October 12, 2026

Allison (Rolls-Royce) 250-C20J

16 aircraft on the U.S. register carry an Allison (Rolls-Royce) 250-C20J engine, rated at about 420 horsepower. The Bell 206 JetRanger and LongRanger is the model most often fitted with it (15 aircraft). The aircraft carrying it were built between 1968 and 1998.

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-C20J. FAA spelling: 250-C20J.

Kind of aircraft

By kind, as a table
aircraftshare
Helicopters16100%

When the aircraft were built by decade

By decade built, as a table
aircraft
19601
19803
199012

What the FAA has certified, ordered and been told about the Allison (Rolls-Royce) 250-C20J the component layer

No FAA order in the current files names this engine series. Operators and repair shops have filed 58 failure reports with the FAA since 1995, 4 of them in the last ten years.

Failure reports 58 since · what operators and shops told the FAA

012459501061119125
Failure reports by year, as a table
reports
951
963
973
985
995
012
021
032
044
054
061
072
083
093
103
112
134
141
155
161
191
211
251

Parts most often reported as the reports name them

Parts most reported, as a table
reports
Bearing6
Engine3
Blade2
Drive Shaft2
Fuel Control2
Governor2
Mount2
Stiffener2
Support2
Turbine Wheel2

Latest reports

2025-05-19Drive Shaft: cracked
2021-03-08Engine: making metal
2019-07-22Indicator: malfunctioned
2016-12-04Blade: failed
2015-09-08Support: cracked

Approved replacement parts 98 parts manufacturer approvals

Parts a company other than the maker may make for this engine and sell as FAA-approved. The companies holding the most:

Most often: seal (7), cage (7), ring (6), gasket (6), nozzle (4), gearshaft (4), washer (3), valve (3), poppet (3), nut (3).

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
Where they are
Biggest operators
Airworthiness

The whole map of how records connect · these connections as data: /graph/engine/allison-rolls-royce-250-c20j.json.

Aircraft newest certificates first · 16

Tail no.Maker and modelGroupOwner and baseCertificateRegisteredStatus
N4328 Bell
206B
Rotorcraft Aircraft Guaranty CORP Trustee
Oklahoma City, Oklahoma
Standard 2026-03-08 ValidFAA registration status code V: Valid registration. All codes
N449S Bell
206B
Rotorcraft S & L Farm and Ranch LLC
Georgetown, Texas
Standard 2025-06-27 ValidFAA registration status code V: Valid registration. All codes
N64GK Bell Helicopter Textron Canada
206B
Rotorcraft Aerospace Trust Management LLC Trustee
Wilmington, Delaware
Standard 2024-12-05 ValidFAA registration status code V: Valid registration. All codes
N130PL Bell
TH-57
Rotorcraft State University of Iowa
Iowa City, Iowa
Experimental 2024-05-10 ValidFAA registration status code V: Valid registration. All codes
N105AP Bell
206B
Rotorcraft Bearing Tree Land Surveying LLC
Oklahoma City, Oklahoma
Standard 2024-05-06 ValidFAA registration status code V: Valid registration. All codes
N67873 Bell
206B
Rotorcraft Mf Choppers LLC
Beeville, Texas
Multiple 2023-04-01 ValidFAA registration status code V: Valid registration. All codes
N452MC Bell
206B
Rotorcraft Citrus County Mosquito Control District
Lecanto, Florida
Standard 2022-08-08 ValidFAA registration status code V: Valid registration. All codes
N104AP Bell
206B
Rotorcraft Rock Creek Leasing LLC
Sapulpa, Oklahoma
Multiple 2021-11-06 ValidFAA registration status code V: Valid registration. All codes
N67978 Bell
206B
Rotorcraft Mf Helicopters LLC
East Troy, Wisconsin
Multiple 2021-04-22 ValidFAA registration status code V: Valid registration. All codes
N67442 Bell
206B
Rotorcraft Anatasia Mosquito Control District
Saint Augustine, Florida
Standard 2021-03-16 ValidFAA registration status code V: Valid registration. All codes
N3399 Bell
206B
Rotorcraft Scotts Helicopter Service
Le Sueur, Minnesota
Standard 2021-01-20 ValidFAA registration status code V: Valid registration. All codes
N260BH Bell
206B
Rotorcraft Powcres LLC
Pequannock, New Jersey
Standard 2019-11-14 ValidFAA registration status code V: Valid registration. All codes
N100NJ Bell
206B
Rotorcraft Alba Leasing Services LLC
Scottsdale, Arizona
Standard 2019-09-26 ValidFAA registration status code V: Valid registration. All codes
N862M Bell
206B
Rotorcraft Chorman Spraying LLC
Milton, Delaware
Multiple 2018-11-05 ValidFAA registration status code V: Valid registration. All codes
N308LC Bell
206B
Rotorcraft Leon County Sheriffs Office
Tallahassee, Florida
Multiple 2013-11-27 ValidFAA registration status code V: Valid registration. All codes
N11CQ Bell
206B-III
Rotorcraft Scotts Helicopter Service INC
Le Sueur, Minnesota
Restricted 2007-08-09 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 12, 2026. Horsepower and thrust are the FAA's figures for the series, not for a particular aircraft.