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

Rolls-Royce 250-B17C

6 aircraft on the U.S. register carry a Rolls-Royce 250-B17C engine, rated at about 420 horsepower. The Valmet L-90 is the model most often fitted with it (2 aircraft). The aircraft carrying it were built between 1979 and 2010.

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 Rolls-Royce 250-B17C. FAA spelling: 250-B17C.

Fitted to model families

Valmet L-902Huizenga Mike TURBANZA1Maule M-71Pilatus Britten-Norman Ltd. BN-21Siai Marchetti/Powers R SIAI MARCHETTI1

Valmet L-90 · Huizenga Mike TURBANZA · Maule M-7 · Pilatus Britten-Norman Ltd. BN-2 · Siai Marchetti/Powers R SIAI MARCHETTI

Where they are owner's state

Nevada2North Carolina1Montana1Florida1

Kind of aircraft

Turboprops6 (100%)

When the aircraft were built by decade

0012211970219802200012010

What the FAA has certified, ordered and been told about the Rolls-Royce 250-B17C the component layer

The design is held under 1 type certificate (E10CE, held by Rolls-Royce Corporation). The FAA has issued 13 airworthiness directives (orders that owners must comply with) that name this engine series.

FAA orders 13 airworthiness directives · newest first

2015-03-092015-02-22 · Repetitive visual inspections · engine
2006-09-072006-16-04 · Inspection of the fuel nozzle screen · engine
2006-07-262006-13-06 · Gas producer rotor assembly tie bolts · engine
2005-06-222005-10-13 · Turbine energy absorbing ring · engine
2005-02-082004-26-09 · Compressor Adaptor Couplings · engine
2005-01-052004-24-09 · Fuel nozzle · engine

All orders naming the Rolls-Royce 250-B17C

Certificates and bulletins

E10CEType certificate held by Rolls-Royce Corporation · 11 models listed · revised September 1, 2000

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/rolls-royce-250-b17c.json · about the eFlight graph.

Aircraft newest certificates first · 6

Tail no.Maker and modelGroupOwner and baseCertificateRegisteredStatus
N888MH Huizenga Mike
TURBANZA
Fixed-wing, single engine Ka Air LLC
Shelby, North Carolina
Experimental 2023-10-16 ValidFAA registration status code V: Valid registration. All codes
N55AS Valmet
L-90 TP
Fixed-wing, single engine Blue Air Training CORP
Las Vegas, Nevada
Experimental 2018-09-04 ValidFAA registration status code V: Valid registration. All codes
N702BA Valmet
L-90
Fixed-wing, single engine Blue Air Training CORP
Las Vegas, Nevada
Experimental 2018-01-11 ValidFAA registration status code V: Valid registration. All codes
N79FS Siai Marchetti/Powers R
SIAI MARCHETTI
Fixed-wing, single engine Marchetti LLC
Conner, Montana
Experimental 2017-11-06 ValidFAA registration status code V: Valid registration. All codes
N992AC Pilatus Britten-Norman Ltd
BN2T ISLANDER
Fixed-wing, multi-engine Individual owner
Standard 2017-07-18 Reports overdueFAA registration status code N: Non-citizen corporation that has not returned its flight-hour reports. All codes
N402BW Maule
M-7-420AC
Fixed-wing, single engine Individual owner
Florida
Standard 2009-09-28 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.