AD/CF6/18 - High Pressure Turbine Inspection and Improved Shroud Cooling

Administered by Department of Infrastructure, Transport, Regional Development, Communications, Sport and the Arts

Legislation au F2006B08462 In force Legislative Instrument

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COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 106 CIVIL AVIATION SAFETY AUTHORITY

SCHEDULE OF AIRWORTHINESS DIRECTIVES

 


General Electric Turbine Engines - CF6 Series

 

AD/CF6/18 High Pressure Turbine Inspection and Improved Shroud Cooling

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.


6/91

 

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.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

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Sourced from the Federal Register of Legislation at 26 August 2026. For the latest information on Australian Government law please go to https://www.legislation.gov.au.