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Wed, Jan 15, 2003

AD: General Electric

AD NUMBER: 2003-01-05
MANUFACTURER:   General Electric
SUBJECT:  Airworthiness Directive 2003-01-05
SUMMARY: This amendment adopts a new airworthiness directive (AD) that is applicable to General Electric Co. (GE) CF6-80A series turbofan engines. This action requires the following initial and repetitive inspections of certain part number (P/N) stage 1 high pressure turbine (HPT) rotor disks for cracks:

  • Etch preparations and fluorescent penetrant inspections.
  • Visual inspections.
  • Eddy current inspections.

This amendment is prompted by a Boeing 767 airplane recently experiencing a stage 1 HPT rotor disk separation resulting in uncontained engine failure. The actions specified in this AD are intended to detect cracks in the bottoms of the dovetail slots that could propagate to failure of the disk and cause an uncontained engine failure.

FMI: www.avantext.com/DailyADIndex.ASP?AD=20030105

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