Airworthiness Directive · Amendment 39-23366 · Carson Helicopters Inc., Croman Corporation, Glacier Helicopter Inc., Reynolds Aviation, Sikorsky Aircraft Corporation, Sikorsky Aircraft, Siller Helicopters Helicopters
Carson Helicopters Inc., Croman Corporation, Glacier Helicopter Inc., Reynolds Aviation, Sikorsky Aircraft Corporation, Sikorsky Aircraft, Siller Helicopters Helicopters
This AD applies to Carson Helicopters Inc., Croman Corporation, Glacier Helicopter Inc., Reynolds Aviation, Sikorsky Aircraft Corporation, Sikorsky Aircraft, Siller Helicopters S-61L, SH-3H, CH-3E, USAF CH-3C, HH-3C, HH-3E, S-61A, S-61D, S-61E, S-61V, S-61N, S-61NM, S-61R, SH-3A.
The models as the FAA's AD index lists them. The serial ranges, installed parts and exceptions are in the AD itself: read it at the FAA.
The FAA is adopting a new airworthiness directive (AD) for various helicopters. This AD was prompted by a report of a loss of tail rotor authority due to auxiliary system fluid loss caused by a yaw pedal damper housing fatigue fracture and attachment bolt fatigue fracture. This AD requires performing repetitive visual inspections of the auxiliary servo assembly, a fluorescent penetrant inspection (FPI) of the yaw pedal damper housing and, if necessary, corrective actions. This AD also requires determining and recording the remaining life of a certain part and revising the existing rotorcraft flight manual (RFM) to provide the flight crew with procedures to follow under certain conditions. This AD also requires revising the airworthiness limitations section (ALS) of the existing maintenance manual (MM) or instructions for continued airworthiness (ICAs) and the existing approved maintenance or inspection program, as applicable by incorporating a new service life limit for a certain part. The FAA is issuing this AD to address the unsafe condition on these products.
The aircraft, engines and makers this AD names, by the model designations in its text. A model listed here may still be outside the AD's serial ranges.
