Airworthiness Directive · Amendment 39-14547 · Turbomeca Makila 1 A2 Turboshaft Engines
Turbomeca Makila 1 A2 Turboshaft Engines
This AD applies to Turbomeca Makila 1 A2 turboshaft engines. These engines are installed on, but not limited to, Eurocopter AS 332 L2 helicopters.
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.
You are responsible for having the actions required by this AD performed no later than November 30, 2008, unless the actions have already been done.
(f) Upgrade the software version in the DECU from version 9 (TU 230C) to version 11 (TU 244C). Information on this upgrade can be found in Turbomeca Mandatory Service Bulletin No. 298 73 0244, dated February 2, 2006.
(g) Version 11 (TU 244C) software must not be intermixed on the helicopter with any other DECU software version except version 9 (TU 230C).
The aircraft, engines and makers this AD names, by the model designations in its text. A model listed here may still be outside the AD's serial ranges.
Engines
