The U.S. aircraft register, updated daily
Engines · turboshaft · data as of October 5, 2026

Allison (Rolls-Royce) 250-C47B

15 aircraft on the U.S. register carry an Allison (Rolls-Royce) 250-C47B engine, rated at about 650 horsepower. The Bell 407 is the model most often fitted with it (15 aircraft). The aircraft carrying it were built between 1996 and 2014.

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-C47B. FAA spelling: 250-C47B.

Fitted to model families

Bell 40715

Bell 407

Where they are owner's state

New York2Missouri2Louisiana2California2Arizona2Utah1Oregon1Idaho1Florida1Delaware1

Kind of aircraft

Helicopters15 (100%)

When the aircraft were built by decade

02457719905200012010

What the FAA has certified, ordered and been told about the Allison (Rolls-Royce) 250-C47B the component layer

No FAA order in the current files names this engine series. Operators and repair shops have filed 1,403 failure reports with the FAA since 1995, 254 of them in the last ten years.

Failure reports 1,403 since · what operators and shops told the FAA

03265981309601061116211826

Parts most often reported as the reports name them

Bearing292Engine74Blade46Hmu36Filter27Gear27Bleed Valve26Indicator21Chip Detector20Pinion Gear19

Latest reports

2026-09-14Duct: collapsed
2026-09-13Bypass Valve: failed
2026-08-12Indicator: inoperative
2026-08-08Blower Motor: burned out
2026-07-31Blower Motor: burned out

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

These connections as data: /graph/engine/allison-rolls-royce-250-c47b.json · about the eFlight graph.

Aircraft newest certificates first · 15

Tail no.Maker and modelGroupOwner and baseCertificateRegisteredStatus
N406TD Bell
407
Rotorcraft Hfs Heli V LLC
New York, New York
Standard 2024-06-10 ValidFAA registration status code V: Valid registration. All codes
N406AP Bell Helicopter Textron Canada
407
Rotorcraft A&P Helicopters INC
Richvale, California
Standard 2023-12-24 ValidFAA registration status code V: Valid registration. All codes
N38BL Bell
407
Rotorcraft Helicopters INC
Wilmington, Delaware
Standard 2022-11-18 ValidFAA registration status code V: Valid registration. All codes
N45TV Bell Helicopter Textron Canada
407
Rotorcraft Individual owner
California
Standard 2021-05-24 ValidFAA registration status code V: Valid registration. All codes
N670RL Bell
407
Rotorcraft Gm Leasing Company LLC
Broussard, Louisiana
Standard 2021-02-10 ValidFAA registration status code V: Valid registration. All codes
N561SF Bell
407
Rotorcraft N390Sf LLC
Chandler, Arizona
Standard 2020-11-06 ValidFAA registration status code V: Valid registration. All codes
N407FH Bell
407
Rotorcraft Vertol Systems Company INC
Destin, Florida
Standard 2020-03-27 ValidFAA registration status code V: Valid registration. All codes
N417PH Bell
407
Rotorcraft Phi Aviation LLC
Lafayette, Louisiana
Standard 2019-09-05 ValidFAA registration status code V: Valid registration. All codes
N434PH Bell
407
Rotorcraft Phi Health LLC
Tempe, Arizona
Standard 2017-05-15 ValidFAA registration status code V: Valid registration. All codes
N366AP Bell Helicopter Textron Canada
407
Rotorcraft Bank of Utah Trustee
Salt Lake City, Utah
Standard 2017-04-12 ValidFAA registration status code V: Valid registration. All codes
N119MF Bell Helicopter Textron Canada
407
Rotorcraft Mercy Flights INC
Medford, Oregon
Standard 2015-08-04 ValidFAA registration status code V: Valid registration. All codes
N407NY Bell
407
Rotorcraft New York City Police Aviation Unit
Brooklyn, New York
Standard 2014-06-09 ValidFAA registration status code V: Valid registration. All codes
N499AE Bell
407
Rotorcraft Air Evac Ems INC
O Fallon, Missouri
Standard 2010-08-26 ValidFAA registration status code V: Valid registration. All codes
N493AE Bell
407
Rotorcraft Air Evac Ems INC
O Fallon, Missouri
Standard 2008-01-28 ValidFAA registration status code V: Valid registration. All codes
N864H Bell
407
Rotorcraft Hillcrest Aircraft CO INC
Lewiston, Idaho
Standard 2004-05-20 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.