AD NUMBER: 2008-13-16
MANUFACTURER: Pratt & Whitney
SUBJECT: Airworthiness Directive 2008-13-16 SUMMARY: We are adopting a
new airworthiness directive (AD) for the products listed above.
This AD results from mandatory continuing airworthiness information
(MCAI) issued by an aviation authority of another country to
identify and correct an unsafe condition on an aviation product.
The MCAI describes the unsafe condition as: There have been two
incidents of fan blade dislodgements due to blade fracture on
relatively hi-time PW305 engines (over 5000 Hrs). The blade
dislodgement in both cases was contained. However, engine
installations sustained considerable collateral damage. The root
cause of fan blade fracture was determined to be the under-minimum
material condition at the fracture location. This AD requires
actions that are intended to address the unsafe condition described
in the MCAI, which could result in an engine shutdown and damage to