Transport i lotnictwo · 14/01/2025
Airworthiness Directives; Siam Hiller Holdings, Inc, Helicopters
The Federal Aviation Administration (FAA) proposes a new airworthiness directive for Siam Hiller Holdings, Inc. to address cracks found in main rotor transmission drive shafts of UH-12E, Army OH-23G, and H-23F helicopters.