Airworthiness Directives (ADs)

Aviation Industry

CAA-2012-09-005

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.

Issue Date: 2012/09/12

Applicability: (1) PW4000-94'' engine models PW4050, PW4052, PW4056, PW4152, PW4156, PW4650, PW4060, PW4060A, PW4060C, PW4062, PW4062A, PW4156A, PW4158, PW4160, PW4460, and PW4462, including models with any dash-number suffix, with a 1st stage high-pressure turbine (HPT) seal support, part number (P/N) 55K601 (contained within assembly P/N 55K602-01) or P/N 50K532 (contained within assembly P/N 50K530-01), installed. (2) PW4000-100'' engine models PW4164, PW4164C, PW4164C/B, PW4168, and PW4168A with a 1st stage HPT seal support, P/N 55K601 (contained within assembly P/N 55K602-01) or P/N 50K532 (contained within assembly P/N 50K530-01), installed.

Model Number: Pratt & Whitney Division PW4000 series engines

CAA AD Number: CAA-2012-09-005

Aeronautics Authority of Original AD: FAA

Original AD Number: 2012-18-03

Effective Date: 2012/10/11

Subject: Engine - Seal and Support Assembly, 1st Stage High Pressure Turbine (HPT) - Replacement

Reference Publications (Revision/ATA/SB): Pratt & Whitney Service Bulletin (SB) No. PWENG 72-721 and SB No. PW4G-100-72-166.

Remarks

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