Resumen
The FAA is adopting a new airworthiness directive (AD) for certain Siam Hiller Holdings, Inc. (Siam Hiller), Model UH-12E (Army OH-23G and H-23F) and UH-12E-L helicopters. This AD was prompted by reports of cracks found in a main rotor (M/R) transmission drive shaft (drive shaft). This AD requires inspecting certain M/R drive shafts for a crack, prohibits installing certain M/R drive shafts unless the inspection is done, and prohibits using certain paint strippers. The FAA is issuing this AD to address the unsafe condition on these products.
Detalles de la directiva
Número de AD
FAA-2024-2555
Número de documento
2025-15839
Tipo
Rule
Fecha de publicación
August 20, 2025
Fecha de entrada en vigor
September 24, 2025
Fabricante afectado
Siam Hiller Holdings, Inc.
Criticidad
routine
Emergencia
No
Docket ID
Docket No. FAA-2024-2555
Temas
Documentos oficiales
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