General Electric Turbine Engines - CF34
General Electric Turbine Engines - CF34 Series
General Electric Turbine Engines - CF34 Series
| AD/CF34/18 | Master Variable Geometry (VG) Actuators | 20/2010 |
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| Applicability: | General Electric Company CF34 engines as specified in FAA AD 2005-07-09. |
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| Requirement: | Unless already accomplished, perform the initial review and action in accordance with the requirements of FAA AD 2005-07-09.Repeat the review and action in accordance with the requirements of FAA AD2005-07-09.Later revisions to GE Alert Service Bulletin No CF34-8E-AL S/B 75-A0001, Revision 3 dated February 14, 2005, approved by the United States Federal Aviation Administration (FAA) as an Alternate Method of Compliance (AMOC) to FAA AD 2005-07-09, are considered acceptable for compliance with the equivalent Requirements of this AD. |
| Compliance: | As specified in the Requirement Document with a revised effective date of31 October 2010. |
| This Airworthiness Directive becomes effective on 31 October 2010. | |
| Background: | This AD is issued to prevent dual-channel electrical signal faults in the VG master actuator, which will cause an un-commanded reduction of thrust to idle with a subsequent loss of the ability to advance thrust above idle. This could result in a multi-engine loss of thrust if dual-channel faults occur on more than one engine simultaneously. |
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Mike Higgins
Delegate of the Civil Aviation Safety Authority
5 October 2010