Transport i infrastruktura · 23/11/2011
Pratt & Whitney Proposes New Airworthiness Directive for JT9D-7R4D Turbofan Engines
Pratt & Whitney is proposing a new airworthiness directive to establish a lower life limit for high-pressure turbine 1st stage air seals in its JT9D-7R4D turbofan engines, aiming to prevent critical engine failure and damage to aircraft.
Source: Federal Register — Transportation DepartmentOpen original release →