airworthiness · Rule · Final rule. · Published 2013-01-31 · Effective 2013-03-07 · 78 FR 6725
Document
Document number
2013-02032
Federal Register citation
78 FR 6725
Type
Rule
Action
Final rule.
Category
airworthiness
Manufacturer
Turbomeca S.A. Turboshaft
Publication date
2013-01-31
Effective date
2013-03-07
FAA docket
Docket No. FAA-2012-0940
Abstract
We are adopting a new airworthiness directive (AD) for Turbomeca S.A. Arriel 2D turboshaft engines. This AD was prompted by a low fuel pressure event caused by deterioration and a loss of the low- pressure drive function within the hydro-mechanical metering unit (HMU). This AD requires replacing the HMU at a reduced life. We are issuing this AD to prevent an uncommanded in-flight shutdown of the engine, and possible loss of the helicopter.