Airworthiness Directive 95-08-03
one-timeAirworthiness Directives; General Electric Company CF6 Series Turbofan Engines
What this AD requires
This amendment adopts a new airworthiness directive (AD), applicable to General Electric Company (GE) CF6-45/-50 series turbofan engines, that requires reduction of the low cycle fatigue (LCF) retirement lives for certain high pressure turbine rotor (HPTR) stage 2 disks, and would provide a drawdown schedule for those affected parts with reduced LCF retirement lives. This amendment is prompted by the results of a refined life analysis performed by the manufacturer which revealed minimum calculated LCF lives significantly lower than published LCF retirement lives. The actions specified by this AD are intended to prevent a LCF failure of the HPTR stage 2 disk, which could result in an uncontained engine failure and damage to the aircraft.
Which aircraft AD 95-08-03 applies to
Applies to GE CF6-50 turbofan engines to prevent low-cycle-fatigue failure of the HPTR stage 2 disk and resulting uncontained engine failure. Establishes a 7,080-cycle LCF retirement life for the listed disk P/Ns, removed from service on a schedule based on cycles since new; GE CF6-50 SB 72-1069 (Sept 12, 1994) describes an FAA-approved rework that extends retirement life to 8,750 or 9,700 cycles depending on CSN at rework.
Whether AD 95-08-03 actually applies to your aircraft (by serial and installed parts) and whether it’s already complied with comes from that aircraft’s records.
How AD compliance is recorded
A valid compliance record (14 CFR 43.9) states:
Tailplate reads a tail number’s logbooks and matches every applicable AD — including this one — to its compliance evidence, with recurring next-due dates computed.
Look up a tail number →Read the full directive (Federal Register)Applicability is derived from the FAA directive corpus and is advisory, not a legal airworthiness determination. Compliance is established only from an aircraft’s actual records.