AD NUMBER: 2006-22-13
MANUFACTURER: Pratt & Whitney
SUBJECT: Airworthiness Directive 2006-22-13
SUMMARY: The FAA is adopting a new airworthiness directive
(AD) for Pratt & Whitney PW4074, PW4074D, PW4077, PW4077D,
PW4084D, PW4090, PW4090-3, and PW4098 turbofan engines, with
certain front turbine hub part numbers installed.