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

Rolls-Royce 250-B17F

10 aircraft on the U.S. register carry a Rolls-Royce 250-B17F engine, rated at about 450 horsepower. The Grob Aircraft Ag G120 is the model most often fitted with it (5 aircraft). The aircraft carrying it were built between 1956 and 2018.

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-B17F. FAA spelling: 250-B17F.

Fitted to model families

Grob Aircraft Ag G1205Grob Aircraft Se G 120TP-A2Beechcraft A451Sst Flugtechnik Gmbh EA 400-5001Valmet L-901

Grob Aircraft Ag G120 · Grob Aircraft Se G 120TP-A · Beechcraft A45 · Sst Flugtechnik Gmbh EA 400-500 · Valmet L-90

Where they are owner's state

Utah5Florida2Nevada1New Jersey1Delaware1

Kind of aircraft

Turboprops9 (90%)Piston singles1 (10%)

When the aircraft were built by decade

02468119501199082010

What the FAA has certified, ordered and been told about the Rolls-Royce 250-B17F the component layer

The design is held under 1 type certificate (E10CE, held by Rolls-Royce Corporation). The FAA has issued 10 airworthiness directives (orders that owners must comply with) that name this engine series.

FAA orders 10 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
2005-01-052004-24-09 · Fuel nozzle · engine
2001-12-192001-24-12 · Helical Torquemeter Gearshaft Assembly · engine
1999-01-0798-24-28 · Main Fuel Control Bellows · engine

All orders naming the Rolls-Royce 250-B17F

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-b17f.json · about the eFlight graph.

Aircraft newest certificates first · 10

Tail no.Maker and modelGroupOwner and baseCertificateRegisteredStatus
N405TP Grob Aircraft Se
G 120TP-A
Fixed-wing, single engine Tvpx Aircraft Solutions INC Trustee
North Salt Lake, Utah
Standard 2025-03-10 ValidFAA registration status code V: Valid registration. All codes
N85ZS Sst Flugtechnik Gmbh
EA 400-500
Fixed-wing, single engine Ag986 LLC
Middletown, Delaware
Standard 2022-11-28 ValidFAA registration status code V: Valid registration. All codes
N401TP Grob Aircraft Ag
G120TP-A
Fixed-wing, single engine Tvpx Aircraft Solutions INC Trustee
North Salt Lake, Utah
Standard 2018-10-12 ValidFAA registration status code V: Valid registration. All codes
N402TP Grob Aircraft Ag
G120TP-A
Fixed-wing, single engine Tvpx Aircraft Solutions INC Trustee
North Salt Lake, Utah
Standard 2018-10-12 ValidFAA registration status code V: Valid registration. All codes
N403TP Grob Aircraft Ag
G120TP-A
Fixed-wing, single engine Tvpx Aircraft Solutions INC Trustee
North Salt Lake, Utah
Standard 2018-10-12 ValidFAA registration status code V: Valid registration. All codes
N404TP Grob Aircraft Se
G 120TP-A
Fixed-wing, single engine Tvpx Aircraft Solutions INC Trustee
North Salt Lake, Utah
Standard 2018-10-12 ValidFAA registration status code V: Valid registration. All codes
N17VT Valmet
L-90 TP
Fixed-wing, single engine Blue Air Training CORP
Las Vegas, Nevada
Experimental 2018-05-23 Reports overdueFAA registration status code N: Non-citizen corporation that has not returned its flight-hour reports. All codes
N145SB Beech
A45 (T-34A)
Fixed-wing, single engine Individual owner
New Jersey
Experimental 2017-08-23 ValidFAA registration status code V: Valid registration. All codes
N192TP Grob Aircraft Ag
G120TP-A
Fixed-wing, single engine Cae USA
Tampa, Florida
Standard 2016-07-29 ValidFAA registration status code V: Valid registration. All codes
N193TP Grob Aircraft Ag
G120TP-A
Fixed-wing, single engine Cae USA
Tampa, Florida
Standard 2016-07-29 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.