Airworthiness Directive
AD 2012-09-10: Pratt & Whitney Canada Turboprop Engines
Airworthiness Directives; Pratt & Whitney Canada Turboprop Engines
- Effective
- May 23, 2012
- Published
- May 8, 2012
- Registered aircraft
- 1,747
Models this AD may apply to
AI-extracted — verify against originalMatched from the AD's applicability section. Applicability must be confirmed by a mechanic against the aircraft's records.
Engines
- P&W CANADA PT6A-110
- P&W CANADA PT6A-112
- P&W CANADA PT6A-114
- P&W CANADA PT6A-114A
- P&W CANADA PT6A-121
- P&W CANADA PT6A-135
- P&W CANADA PT6A-135A
- P&W CANADA PT6A-38
- P&W CANADA PT6A-41
- P&W CANADA PT6A-41AG
- P&W CANADA PT6A-42
- P&W CANADA PT6A-42A
- P&W CANADA PT6A-61
- P&W CANADA PT6A-61A
- P&W CANADA PT6A-64
- P&W CANADA PT6A-66
- P&W CANADA PT6A-66 SER
- P&W CANADA PT6A-66A
- P&W CANADA PT6A-66B
- P&W CANADA PT6A66D
- Only with: Engines with power section maintenance involving first stage sun gear or planet gear replacement since December 22, 2008, and with TAATI PMA first stage sun gears P/N E3028456 or E3037304, or planet gear sets P/N E3101455-02 or E3101525-02 installed.
- Only with: Engines with power section maintenance involving first stage sun gear or planet gear replacement since December 22, 2008, and with TAATI PMA first stage sun gears P/N E3028456 or E3037304, or planet gear sets P/N E3101455-02 or E3101525-02 installed.
Applicability
From the AD textThis AD applies to Pratt & Whitney Canada PT6A-38, -41, -42, -42A, -61, -64, -66, -66B, -110, -112, -114, -114A, -121, -135, and -135A series turboprop engines: (1) That have had maintenance done to the power section module involving first stage sun gear or planet gear replacement since December 22, 2008; and (2) That have any of the following Timken Alcor Aerospace Technologies, Inc. (TAATI) part manufacturer approval (PMA) replacement first stage sun gears or planet gear sets installed: (i) First stage sun gears P/N E3028456, all serial numbers (S/ Ns). (ii) First stage sun gears P/N E3037304, all S/Ns. (iii) Planet gear sets P/N E3101455-02, all S/Ns. (iv) Planet gear sets P/N E3101525-02, all S/Ns.
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