Resumen
We propose to adopt a new airworthiness directive (AD) for all Pratt & Whitney Division (PW) PW4052, PW4056, PW4060, PW4062, PW4062A, PW4152, PW4156A, PW4158, PW4460, and PW4462 turbofan engine models, including engines identified with suffixes -1C, -1E, -3, -3A, or -3B. This proposed AD was prompted by the discovery of multiple cracked 4th stage low-pressure turbine (LPT) air seals in the fleet. This proposed AD requires removal from service of certain air seals. We are proposing this AD to correct the unsafe condition on these products.
Detalles de la directiva
Número de AD
FAA-2017-0817
Número de documento
2017-21558
Tipo
Proposed Rule
Fecha de publicación
October 12, 2017
Cierre de comentarios
November 27, 2017
Fabricante afectado
Pratt & Whitney Division Turbofan
Criticidad
routine
Emergencia
No
Docket ID
Docket No. FAA-2017-0817
Temas
Documentos oficiales
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