Pratt and Whitney Turbine Engines - JT8D
Pratt and Whitney Turbine Engines - JT8D Series
Pratt and Whitney Turbine Engines - JT8D Series
| AD/JT8D/22 Amdt 5 | Combustion Chamber Outer Case | 7/2005 |
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| Applicability: | Pratt & Whitney (PW) Models JT8D-1, -1A, -1B, -7, -7A, -7B, -9, -9A, -11, -15,-15A, -17, -17A, -17R, and -17AR turbofan engines, with combustion chamber outer case (CCOC) part numbers (P/Ns) 490547, 542155, 616315, 728829, 728829-001, 730413, 730413-001, 730414, 730414-001, 767197, 767279, 767279-001 installed. |
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| Requirement: | To prevent CCOC flange cracks that could result in uncontained engine failure, in-flight engine shutdown, engine cowl release, and airframe damage, comply with the Requirements of FAA Airworthiness Directive (AD) 96-23-14 Amendment 39-9820.Note: FAA AD 96-23-14 Amendment 39-9820 refers. |
| Compliance: | Unless previously accomplished, as per compliance schedule of the FAA AD96-23-14 Amendment 39-9820. |
| This Amendment becomes effective on 7 July 2005. | |
| Background: | There have been reports of crack origins in the forward face of the rear flange of the CCOC. These cracks, if undetected, may cause CCOC failure leading to uncontained engine failure, in-flight engine shutdown, engine cowl release, and airframe damage. The actions specified by this AD are intended to address the unsafe condition identified above.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.Original issue of this Directive became effective on 25 April 1996. |
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James Coyne
Delegate of the Civil Aviation Safety Authority
25 May 2005