CTHIn ForceLegislation
AD/CF6/18 - High Pressure Turbine Inspection and Improved Shroud Cooling
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AD/CF6/18 - High Pressure Turbine Inspection and Improved Shroud Cooling
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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
Applicability: All model CF6-80C2, A5, B6, B6 F and DIF.
Requirement: Carry out the technical requirements of FAA AD 91-05-21 Amdt 39-6900.
Compliance: As detailed in Requirement Document with a revised effective date of 13 June 1991.
Background: The AD introduces a borescope inspection program to detect high pressure turbine (HPT) stage 1 shroud and blade distress. Also, it requires installation of improved HPT hardware which increases the cooling to the HPT stage 1 shroud. The AD is prompted by one HPT failure which resulted in aircraft damage.