Airworthiness Directives; Safran Helicopter Engines, S.A. (Type Certificate Previously Held by Turbomeca, S.A.) Turboshaft Engines
airworthiness · Rule · Final rule. · Published 2021-07-15 · Effective 2021-08-19 · 86 FR 37229
Document
Document number
2021-15041
Federal Register citation
86 FR 37229
Type
Rule
Action
Final rule.
Category
airworthiness
Manufacturer
Safran Helicopter
Publication date
2021-07-15
Effective date
2021-08-19
FAA docket
Docket No. FAA-2021-0100
Abstract
The FAA is adopting a new airworthiness directive (AD) for all Safran Helicopter Engines, S.A. Arriel 2C and Arriel 2S1 model turboshaft engines. This AD was prompted by reports of error messages on the full authority digital engine control (FADEC) B digital engine control unit (DECU), caused by blistering of the varnish on the DECU circuit board. This AD requires the replacement of certain FADEC B DECUs. The FAA is issuing this AD to address the unsafe condition on these products.