Airworthiness Directives; General Electric (GE) CF6-80E1 Series Turbofan Engines
airworthiness · Rule · Final rule; request for comments. · Published 2005-05-19 · Effective 2005-06-03 · 70 FR 28806
Document
Document number
05-9887
Federal Register citation
70 FR 28806
Type
Rule
Action
Final rule; request for comments.
Category
airworthiness
Manufacturer
General Electric (GE) CF6-80E1 Series Turbofan
Publication date
2005-05-19
Effective date
2005-06-03
FAA docket
Docket No. FAA-2005-21238
Abstract
The FAA is adopting a new airworthiness directive (AD) for General Electric (GE) CF6-80E1 series turbofan engines that have an electronic control unit (ECU) with software version E.1.M. or earlier installed. This AD requires installing improved software for the ECU. This AD results from an uncommanded engine acceleration event caused by a failure of the ECU digital interface unit (DIU). We are issuing this AD to prevent an undetected failure of the ECU DIU, which could result in uncommanded acceleration to the overspeed limit without response to throttle commands. The airplane could then experience asymmetric thrust.