Since its launch in 1977, 28 versions of the Arrielfamily have become the benchmark in theirclasses. The Arriel 1 powers the EurocopterBK 117 C2, Ecureuil AS 350 B2, EC 145/ UH-72A“Lakota”, S 76 C.

Generating Power and Performance

> Missions•

> Simple design, easy maintenance• 5 wholly replaceable modules (within the same version).

> Low direct maintenance costs• TBO of 3,600 hours ‘on condition’ on Module 1 and 7,200 hours on

modules 2 and 4.

ARRIEL 1FOR THE EC145 - BK 117 C2 - AS 350 B2

The Arriel family> 25 years of outstanding reliability.> 35 Million operating hours.> 10,000 engines delivered.

37,000,000

FLY IN G H OURS

EC 145 / UH-72Apowered by two Arriel 1E2

BK 117 C2powered by two Arriel 1E2

AS 350 B2 Ecureuilpowered by one Arriel 1D1

Turbomeca is dedicated to thedesign, production, sale andsupport of gas turbines forhelicopters. Turbomeca o�ersthe world’s most comprehensiverange of engines, along withstrong industrial cooperationassociated to close-by customerservices structures. Dedicatedto 2,350 customers in 155countries, Turbomeca provides aproximity service thanks to its 16sites, 26 Maintenance Centers,24 Repair & Overhaul Centersand 90 Field representatives andField technicians.

Compressor stage• 1 axial, 1 centrifugal.

2 stage gas generator turbine

Reduction gear Power output shaft• 6,000 rpm.

Single-stagepower turbine• All blades

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Annular combustion chamber• Centrifugal injection.

ARRIEL 1

> Helicopters:

This document is intended for general informationpurposes only. Turbomeca reserves the right tomodify the products and services described in thisdocument without prior notice.

Maintaining close contact with Arriel 1 operators worldwide• Turbomeca-approved Repair & Overhaul centers.• 24/7 Turbomeca hotline.

> Power rating (ISA, sea level, kW/shp): > Engine weight: 125 kg

> Description:• OEI 2.5 minutes rating o�ers a discontinued cumulative

time, up to 15 minutes, with no shop visit.• Max take o� weight (MTOW) EC145, Arriel 1E2: 3,585 kg /

7,904 lb (ISA sea level).• Single or twin engine helicopter.

2E11D1leirrA

> 541 CE / 2C 711 KB2B 053 SAnoitacilppA

> One Engine Inoperative (OEI)

825setunim 5.2 IEO / 708825suounitnoc IEO / 708

> All Engines Operative (AEO)

/ 721 528 / 708664suounitnoc .xaM / 625 516 / 692