WASHINGTON, Sept. 3 -- Federal Aviation Administration has issued a rule called: Airworthiness Directives; Pratt & Whitney Division Engines.
The rule was published in the Federal Register on Sept. 3 by Brian Knaup, Acting Deputy Director, Integrated Certificate Management Division, Aircraft Certification Service.
Summary: The FAA is adopting a new airworthiness directive (AD) for certain Pratt & Whitney Division (PW) Model PW4074D, PW4077D, PW4084D, PW4090, and PW4090-3 engines. This AD was prompted by the discovery of a quality escape involving incorrect shot peening on certain high-pressure compressor (HPC) drum rotor disk assemblies. This AD requires visually inspecting the HPC drum rotor disk assembly for incorrect shot peen coverage ...