AD/CF6/7 - First Stage High Pressure Turbine Disc Embossment Radii
1AD/CF6/7 - First Stage High Pressure Turbine Disc Embossment Radii
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COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 106 CIVIL AVIATION SAFETY AUTHORITY
SCHEDULE OF AIRWORTHINESS DIRECTIVES
Image unavailable in extracted text General Electric Turbine Engines - CF6 Series
AD/CF6/7 First Stage High Pressure Turbine Disc Embossment Radii
Applicability: CF6-80A/A2, -80A1/A3 engines.
9/86
Requirement: Inspect first stage high pressure turbine discs in accordance with the requirements of General Electric SB (CF6-80A Series) A72-446.
Reference Document FAA AD 86-15-04 Amdt 39-5353.
Compliance: In accordance with the Requirement Document.
Background: This Directive has been issued to require inspection of certain first stage turbine discs for blemishes in the forward and aft embossment radii. The manufacturer advises blemishes in the embossment radii may affect the service life of the discs.