AD 2021-09-10
Effective 05/27/2021 · Published 04/22/2021
Airworthiness Directives; Pratt & Whitney Turbofan Engines
Summary
The FAA is superseding Airworthiness Directive (AD) 2012-04-15 for all Pratt & Whitney (PW) JT9D-3A, JT9D-7, JT9D-7A, JT9D-7AH, JT9D- 7F, JT9D-7H, JT9D-7J, JT9D-7Q, JT9D-7Q3, JT9D-7R4D, JT9D-7R4D1, JT9D- 7R4E, JT9D-7R4E1, JT9D-7R4E4, JT9D-7R4G2, JT9D-7R4H1, JT9D-20, JT9D- 20J, JT9D-59A, and JT9D-70A (JT9D) model turbofan engines. AD 2012-04- 15 required revisions to the Airworthiness Limitations Section (ALS) of the…