AD 2012-02-01
Effective 04/24/2012 · Published 03/20/2012
Airworthiness Directives; Pratt & Whitney (PW) Turbofan Engines
Summary
We are adopting a new airworthiness directive (AD) for Pratt & Whitney (PW) PW2037, PW2037(M), and PW2040 turbofan engines with certain fan blades with a cutback leading edge, installed. This AD was prompted by reports from PW that fan blade leading edge erosion can result in a fan thrust deterioration mode (FTDM) condition, a condition that cannot be detected by the crew, and that reduces the engine's capability of…