Transport i infrastruktura · 11/07/2012
Airworthiness Directive Proposal for Pratt & Whitney Turbofan Engines
Pratt & Whitney is proposing a new airworthiness directive to address 16 reports of damaged or failed 3rd stage low-pressure turbine duct segments in their PW4050, PW4052, PW4056, and other models, with the goal of preventing engine failure and damage to the airplane.