routineRule

AD FAA-2016-7850

Airworthiness Directives; Safran Helicopter Engines, S.A. Turboshaft Engines

Summary

We are adopting a new airworthiness directive (AD) for all Safran Helicopter Engines, S.A. Arriel 2B turboshaft engines. This AD requires removing any pre-modification (mod) TU 158 hydro-mechanical metering unit (HMU) and replacing with a part eligible for installation. This AD was prompted by a report of an uncommanded in- flight shutdown (IFSD) on a single-engine helicopter, caused by a low returning spring rate of the needle of the HMU. We are issuing this AD to correct the unsafe condition on these products.

Directive Details

AD Number

FAA-2016-7850

Document Number

2017-04634

Type

Rule

Publication Date

March 9, 2017

Effective Date

April 13, 2017

Affected Manufacturer

Safran Helicopter Engines, S.A. Turboshaft

Criticality

routine

Emergency

Docket ID

Docket No. FAA-2016-7850

Topics

Air transportationAircraftAviation safetyIncorporation by referenceSafety

Official Documents

View PDF View on Federal Register

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