Airworthiness Directive · Amendment 39-14093 · General Electric (GE) CF6-80E1 Series Turbofan Engines
General Electric (GE) CF6-80E1 Series Turbofan Engines
Superseded. A later AD replaced this one: AD 2007-17-01. Comply with the one in force.
This AD applies to all General Electric (GE) CF6-80E1 series turbofan engines with electronic control unit (ECU) part numbers (P/N's) 1799M99P12, 1851M74P05, 1851M80P05, and 1960M84P03 or earlier installed. These (GE) CF6-80E1 series engines are installed on, but not limited to, Airbus Industrie (AI) A330 airplanes.
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.
You are responsible for having the actions required by this AD performed within the compliance times specified unless the actions have already been done.
For GE CF6-80E1A4/B engines with ECU's that already have software version E.1.N installed, no further action is required.
At next ECU exposure, upload improved software version E.1.N. Use the Accomplishment Instructions of either of GE Aircraft Engines CF6-80E1 Service Bulletin (SB) 73-0070, dated June 22, 2004, or SB 73-0070, Revision 01, dated March 21, 2005.
(h) For the purposes of this AD, the next ECU exposure is defined as the next removal of the ECU for repair, or the next engine shop visit, whichever occurs sooner.
(i) After the effective date of this AD, do not install any ECU that has a software version earlier than E.1.N onto any engine.
