Summary
We are superseding airworthiness directive (AD) 2013-01-07 for all Turbomeca S.A. Arriel 2D turboshaft engines. AD 2013-01-07 required replacing the hydromechanical metering unit (HMU) at a reduced life. This AD maintains that requirement and also requires conducting inspections of the HMU. This AD was prompted by further cases of deterioration of HMU rotating components. We are issuing this AD to prevent an uncommanded in-flight shutdown of the engine and possible loss of the helicopter.
Directive Details
AD Number
FAA-2012-0940
Document Number
2013-27185
Type
Rule
Publication Date
November 15, 2013
Effective Date
December 20, 2013
Affected Manufacturer
Turbomeca S.A. Turboshaft
Criticality
routine
Emergency
No
Docket ID
Docket No. FAA-2012-0940
Topics
Official Documents
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