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AD/JT8D/12 Amdt 2 - High Pressure Compressor Disc Tie Rod Hole
Pratt and Whitney Turbine Engines - JT8DPratt and Whitney Turbine Engines - JT8D Series
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Pratt and Whitney Turbine Engines - JT8D Series
| AD/JT8D/12 Amdt 2 | High Pressure Compressor Disc Tie Rod Hole | 7/2005 |
|---|
| Applicability: | Pratt & Whitney (P&W) JT8D-1, -1A, -7, -7A, -7B, -9, -9A, -11, -15, -15A, -17,-17A, -17R, and -17AR turbofan engines. |
|---|---|
| Requirement: | Inspect 9th through 12th stage High Pressure Compressor (HPC) disks at the tie-rod holes in accordance with the Requirements of Federal Aviation Administration (FAA) Airworthiness Directive (AD) 95-16-07.Note: FAA AD 95-16-07 Amendment 39-9327 refers. |
| Compliance: | Unless previously accomplished, as per compliance schedule of the FAA AD95-16-07. |
| This Amendment becomes effective on 7 July 2005. | |
| Background: | There have been reports of uncontained failure of 9th through 12th HPC discs because of the cracks originating from tie-rod holes. The inspection requirements of this AD are aimed at detection of cracks and prevention of resultant uncontained failures.The current amendment deletes reference to the manufacturer’s document and refers to the FAA AD as part of the harmonisation with the engine certificating Authority requirements.Amendment 1 of this Directive became effective in 1987. |
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James Coyne
Delegate of the Civil Aviation Safety Authority
25 May 2005