Airworthiness Directives; Turbomeca Makila 1 A, 1 A1, and 1 A2 Turboshaft Engines
airworthiness · Rule · Final rule; request for comments. · Published 2002-08-01 · Effective 2002-08-16 · 67 FR 49859
Document
Document number
02-19164
Federal Register citation
67 FR 49859
Type
Rule
Action
Final rule; request for comments.
Category
airworthiness
Publication date
2002-08-01
Effective date
2002-08-16
FAA docket
Docket No. 2001-NE-23-AD
Abstract
This amendment adopts a new airworthiness directive (AD) that is applicable to Turbomeca Makila 1 A, 1 A1, and 1 A2 turboshaft engines. This action requires replacing certain digital electronic control units (DECU's) and electronic control units (ECU's) with modified DECU's and ECU's. This amendment is prompted by a report of an uncontained engine turbine wheel failure and the subsequent loss of control of the helicopter. The actions specified in this AD are intended to prevent an engine overspeed condition resulting from the failure of two or more NTL channels.