AD/JT9D/12 Amdt 1 - Fifteenth Stage Compressor Discs
1AD/JT9D/12 Amdt 1 - Fifteenth Stage Compressor Discs
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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 Pratt and Whitney Turbine Engines - JT9D Series
AD/JT9D/12
Amdt 1
Fifteenth Stage Compressor Discs 9/89
Applicability: JT9D-3A, -7, -7A, -7H, -7AH, -7A(SP), -7F, -7J, -20, -20J.
Requirement: Inspect 15th stage compressor discs P/N 658615 and 672915 in accordance with the requirements of PWA SB No.4908 Rev.1.
Compliance: As detailed in the Requirement document.
Background: This Directive has been amended to reflect the manufacturers latest revision to S.B.
- The revision, in part, reduces the initial inspection requirement from 6,500 cycles to 3,500 cycles.