Document ID: chunk:federal_register_of_legislation:F2006B08462:body:0
Version: federal_register_of_legislation:F2006B08462
Segment Type: other
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Character Range: 0–871

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.