FAA Issues Airworthiness Directive for Hiller UH-12 Helicopters

Summary

The Federal Aviation Administration (FAA) has issued an airworthiness directive (AD) for Hiller Aircraft Corporation Model UH-12A, UH-12B, UH-12C, UH-12D, and UH-12E helicopters, which supersedes an existing AD requiring dye penetrant inspections and visual checks of the main rotor outboard T-T bar pin. The new directive allows for magnetic particle inspections as an alternative and reduces reporting requirements.