airworthiness · Rule · Final rule; request for comments. · Published 2006-04-05 · Effective 2006-05-05 · 71 FR 16992
Document
Document number
06-3253
Federal Register citation
71 FR 16992
Type
Rule
Action
Final rule; request for comments.
Category
airworthiness
Manufacturer
Turbomeca Makila 1 A2 Turboshaft
Publication date
2006-04-05
Effective date
2006-05-05
FAA docket
Docket No. FAA-2006-24239
Abstract
The FAA is adopting a new airworthiness directive (AD) for Turbomeca Makila 1 A2 turboshaft engines. This AD requires upgrading the software version of the digital electronic control. This AD results from Turbomeca determining that Makila 1 A2 turboshaft engines with software version 9 installed in the digital electronic control unit (DECU), under certain conditions, could experience a free turbine overspeed and uncontained failure. We are issuing this AD to prevent overspeed and uncontained failure of the free turbine and damage to the helicopter.