The U.S. aircraft register, updated daily
Engines · turboshaft · data as of October 7, 2026

Turbomeca (Safran) ARRIUS 2K1

1 aircraft on the U.S. register carry a Turbomeca (Safran) ARRIUS 2K1 engine, rated at about 450 horsepower. The Agusta Spa A109 is the model most often fitted with it (1 aircraft).

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 Turbomeca (Safran) ARRIUS 2K1. FAA spelling: ARRIUS 2K1.

Fitted to model families

Agusta Spa A1091

Agusta Spa A109

Where they are owner's state

Pennsylvania1

Kind of aircraft

Helicopters1 (100%)

When the aircraft were built by decade

0001112000

What the FAA has certified, ordered and been told about the Turbomeca (Safran) ARRIUS 2K1 the component layer

The FAA has issued 3 airworthiness directives (orders that owners must comply with) that name this engine series. Operators and repair shops have filed 13 failure reports with the FAA since 1995, 3 of them in the last ten years.

FAA orders 3 airworthiness directives · newest first

2014-03-312014-04-06 · Hydro-mechanical metering unit (HMU) · engine
2008-10-082008-19-11 · Electronic control (EEC) unit · engine
2003-10-222003-19-06 · Gas generator high pressure (HP) turbine disk · engine

Failure reports 13 since · what operators and shops told the FAA

001220304050607081011119

Parts most often reported as the reports name them

Antenna2Engine2Computer1Eec1Exciter1Fuel Control1Injector1Seal1Thermocouple1Transmission1

Latest reports

2019-03-26Tube: cracked
2011-06-03Seal: leaking
2010-08-17Computer: failed
2008-07-11Eec: malfunctioned
2007-05-09Fuel Control: failed

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

These connections as data: /graph/engine/turbomeca-safran-arrius-2k1.json · about the eFlight graph.

Aircraft newest certificates first · 1

Tail no.Maker and modelGroupOwner and baseCertificateRegisteredStatus
N91LF Agusta Spa
A109E
Rotorcraft International Defense & Aerospace Group LLC
Glen Mills, Pennsylvania
Standard 2020-10-20 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 7, 2026. Horsepower and thrust are the FAA's figures for the series, not for a particular aircraft.