Summary
We are adopting a new airworthiness directive (AD) for Turbomeca S.A. Arriel 2C1, 2C2, and 2S2 turboshaft engines. This AD requires replacement of affected digital engine control units (DECUs). This AD was prompted by a report of a helicopter experiencing a DECU malfunction during flight. We are issuing this AD to prevent loss of automatic control on one or both engines installed on the same helicopter, which could result in an uncommanded in-flight engine shutdown, forced autorotation landing, or accident.
Directive Details
AD Number
FAA-2012-0057
Document Number
2012-15182
Type
Rule
Publication Date
June 21, 2012
Effective Date
July 26, 2012
Affected Manufacturer
Turbomeca S.A. Turboshaft
Criticality
important
Emergency
No
Docket ID
Docket No. FAA-2012-0057
Topics
Official Documents
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