AD NUMBER: 2007-21-06
MANUFACTURER: General Electric
SUBJECT: Airworthiness Directive 2007-21-06 SUMMARY: The FAA is
adopting a new airworthiness directive (AD) for GE CF6-80C2A5F
turbofan engines installed on, but not limited to, Airbus
A300F4-605R airplanes. This AD requires removing previous software
versions from the engine electronic control unit (ECU). Engines
with new version software will have increased margin to flameout.
This AD results from reports of engine flameout events during
flight, including reports of events where all engines
simultaneously experienced a flameout or other adverse operation.
Although the root cause investigation is not yet complete, we
believe that exposure to ice crystals during flight is associated
with these flameout events. We are issuing this AD to minimize the
potential of an all-engine flameout event caused by ice accretion
and shedding during flight.