Resumen
The FAA is adopting a new airworthiness directive (AD) for certain Leonardo S.p.a. Model AB412 helicopters. This AD was prompted by a cracked spiral bevel gear. This AD requires a one-time visual inspection and a recurring fluorescent magnetic particle inspection (FMPI) of affected spiral bevel gears for a crack, and depending on the inspection results, removing the spiral bevel gear from service. This AD also prohibits installing an affected spiral bevel gear unless it has recently passed an FMPI. The FAA is issuing this AD to address the unsafe condition on these products.
Detalles de la directiva
Número de AD
FAA-2017-1077
Número de documento
2021-07481
Tipo
Rule
Fecha de publicación
April 13, 2021
Fecha de entrada en vigor
April 28, 2021
Fabricante afectado
Leonardo S.p.a.
Criticidad
routine
Emergencia
No
Docket ID
Docket No. FAA-2017-1077
Temas
Documentos oficiales
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