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

Turbomeca (Safran) ARRIEL 1K1

1 aircraft on the U.S. register carry a Turbomeca (Safran) ARRIEL 1K1 engine, rated at about 738 horsepower. The Agusta S P A A109K2 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) ARRIEL 1K1. FAA spelling: ARRIEL 1K1.

Fitted to model families

Agusta S P A A109K21

Agusta S P A A109K2

Where they are owner's state

Utah1

Kind of aircraft

Helicopters1 (100%)

When the aircraft were built by decade

0001111980

What the FAA has certified, ordered and been told about the Turbomeca (Safran) ARRIEL 1K1 the component layer

The FAA has issued 14 airworthiness directives (orders that owners must comply with) that name this engine series. Operators and repair shops have filed 3 failure reports with the FAA since 1995, 3 of them in the last ten years.

FAA orders 14 airworthiness directives · newest first

2016-12-062016-22-10 · Centrifugal impeller · engine
2015-09-012015-13-04 · Engine accessory gearbox (AGB) · engine
2014-01-282013-24-05 · Free turbine module · engine
2013-05-282013-08-22 · Tachometer's unit cycle-counting feature · engine
2013-02-142012-27-02 · High gas generator speed (NG) rating vibration check · engine
2013-01-072012-24-03 · Gas generator rotating assembly · engine

All orders naming the Turbomeca (Safran) ARRIEL 1K1

Failure reports 3 since · what operators and shops told the FAA

00122208110

Parts most often reported as the reports name them

Longeron1Nut1Pitch Control1

Latest reports

2010-03-20Pitch Control: separated
2008-05-20Nut: loose
2008-04-07Longeron: cracked

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

Where they are
  • Utah 1 of these aircraft

These connections as data: /graph/engine/turbomeca-safran-arriel-1k1.json · about the eFlight graph.

Aircraft newest certificates first · 1

Tail no.Maker and modelGroupOwner and baseCertificateRegisteredStatus
N901HC Agusta S P A
A109K2
Rotorcraft Ihc Health Services INC DBA
Salt Lake City, Utah
Standard 2003-08-26 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.