FEDERAL AVIATION ADMINISTRATION ISSUES RULE: AIRWORTHINESS DIRECTIVES; SIAM HILLER HOLDINGS, INC.

WASHINGTON, Aug. 20 -- Federal Aviation Administration has issued a rule called: Airworthiness Directives; Siam Hiller Holdings, Inc.

The rule was published in the Federal Register on Aug. 20 by Steven W. Thompson, Acting Deputy Director, Compliance & Airworthiness Division, Aircraft Certification Service.

Summary: 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 pr...