Airworthiness Directives (ADs)
CAA-2012-09-013
The aircraft owner or operator shall comply with Airworthiness Directives issued by the CAA or the aeronautics authority of the State of Design (SoD) of the aviation products, appliances and parts, and take all necessary actions thereto.
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Issue Date
- 2012/09/20
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Applicability
- To the following Pratt & Whitney Division (Pratt & Whitney) turbofan engines: (1) PW4000-94'' engine models PW4052, PW4056, PW4060, PW4062, PW4062A, PW4152,
PW4156A, PW4158, PW4460, and PW4462, including those models with any dash number suffix,
with a high-pressure compressor (HPC) drum rotor disk assembly listed in Table 1 to paragraph (c) of this AD installed. (2) PW4000-100'' engine models PW4164, PW4168, and PW4168A, with a HPC drum rotor disk assembly listed in Table 1 to paragraph (c) of this AD installed. (3) PW4000-112'' engine models PW4074, PW4077, PW4077D, PW4084D, PW4090, and
PW4090-3, with a HPC drum rotor disk assembly listed in Table 1 to paragraph (c) of this AD installed.
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Model Number
- Pratt & Whitney Division (Pratt & Whitney) PW4052, PW4056, PW4060, PW4062, PW4062A, PW4074, PW4077, PW4077D, PW4084D, PW4090, PW4090-3, PW4152, PW4156A, PW4158, PW4164, PW4168, PW4168A, PW4460, and PW4462 turbofan engines.
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CAA AD Number
- CAA-2012-09-013
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Aeronautics Authority of Original AD
- FAA
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Original AD Number
- 2012-18-17
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Effective Date
- 2012/10/22
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Subject
- We are issuing this AD to prevent failure of the HPC drum rotor disk assembly, which could lead to an uncontained engine failure, and
damage to the airplane.
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Reference Publications (Revision/ATA/SB)
- ATA 72. This AD supersedes AD 2010-18-13(CAA-2010-09-004), Amendment 39-16427 (75 FR 55459, September 13,2010). Ref. Service Bulletin No. PW4G-100-72-240, Revision 1, dated June 12, 2012, and PW4G-100-72-241, dated November 15, 2011, and PW4ENG 72-816, Revision 1, dated June 12, 2012, and PW4ENG 72-817, dated December 7, 2011.
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Remarks
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