Airworthiness Directives (ADs)
CAA-2011-12-002
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
- 2011/12/10
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Applicability
- to the following Pratt & Whitney Division (PW) turbofan engines, with high-pressure turbine (HPT) stage 1 airseal, part number (P/N) 50L879; HPT stage 2 airseal, P/N 53L030; or HPT stage 1 airseal ring, P/N 50L664, installed:
(1) PW4000-100'' Engines
PW4000-100'' engine models PW4164, PW4164C, PW4164C/B, PW4168, and PW4168A. (2) PW4000-94'' Engines
(i) PW4000-94'' engine models PW4060, PW4060A, PW4060C, PW4062, PW4062A, PW4156A, PW4158, PW4160, PW4460, and PW4462 that have incorporated either Engineering Change Numbers EC92KK322G, H, I, J, and K, or one of the following PW Service Bulletins (SBs): PW4ENG 72-490, PW4ENG 72-504, PW4ENG 72-512, PW4ENG 72-572, PW4ENG 72-588, PW4ENG 73-150; as indicated with a (-3), (-3A), or (-3B) suffix on the engine data plate.
(ii) PW4000-94'' engine models PW4050, PW4052, PW4056, PW4152, PW4156, and PW4650 that have incorporated either Engineering Change Numbers EC92KK322G, H, I, J, and K, or one of the following PW SBs: PW SB PW4ENG 72-490, PW4ENG 72-504, PW4ENG 72-512, PW4ENG 72-572, PW4ENG 72-588, PW4ENG 73-150; as indicated with a (-3), (-3A), or (-3B) suffix on the engine data plate.
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Model Number
- Pratt & Whitney Division (PW) PW4000 Series Turbofan Engines
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CAA AD Number
- CAA-2011-12-002
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Aeronautics Authority of Original AD
- FAA
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Original AD Number
- 2011-25-09
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Effective Date
- 2012/01/10
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Subject
- To prevent failure of these parts, which could lead to an uncontained engine failure and damage to the airplane.
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Reference Publications (Revision/ATA/SB)
- None.
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Remarks
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