Resumen
We are adopting a new airworthiness directive (AD) for all Pratt & Whitney Division (PW) PW4074, PW4074D, PW4077, PW4077D, PW4084D, PW4090, and PW4090-3 turbofan engines. This AD was prompted by an uncontained failure of a high-pressure turbine (HPT) hub during takeoff. This AD requires an inspection to measure the surface condition of the aft side web/rim fillet of HPT 1st stage hubs and removal from service of hubs that fail inspection. We are issuing this AD to correct the unsafe condition on these products.
Detalles de la directiva
Número de AD
FAA-2016-8836
Número de documento
2017-04627
Tipo
Rule
Fecha de publicación
March 9, 2017
Fecha de entrada en vigor
April 13, 2017
Fabricante afectado
Pratt & Whitney Division Turbofan
Criticidad
important
Emergencia
No
Docket ID
Docket No. FAA-2016-8836
Temas
Documentos oficiales
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