Carson Helicopters, Inc. | Croman Corporation | Glacier Helicopter, Inc. | Reynolds Aviation | Sikorsky Aircraft | Sikorsky Aircraft Corporation | Siller Helicopters Airworthiness Directives

Airworthiness Directives; Carson Helicopters, Inc.; Croman Corporation; Sikorsky Aircraft Corporation; and Siller Helicopters

Unsafe Condition: The left and right input freewheel unit (IFWU) assemblies on certain main gearboxes may slip or disengage, resulting in both engines overspeeding, engine shutdowns, and loss of engine power to the ...

Why matched: Airworthiness Directives; Carson Helicopters, Inc.; Croman Corporation; Sikorsky Aircraft Corporation; and Siller Helicopters

Airworthiness Directives; Sikorsky Aircraft-manufactured Model CH-54A Helicopters

Unsafe Condition: Failure of the second stage lower planetary plate (part number 6435-20229-102) due to fatigue cracking, which could lead to main gearbox failure, drive system failure, and subsequent loss of contro...

Why matched: Airworthiness Directives; Sikorsky Aircraft-manufactured Model CH-54A Helicopters

Airworthiness Directives; Sikorsky Models S-61L, S-61N, S-61NM, S-61R, S-62A, S-64A, S-64E, S-64F Helicopters, Including Military CH-3C, HH-3C, CH-3E, HH-3E, and CH-54B Helicopters

Unsafe Condition: Flaking chrome plating from the pistons of Model 66WAP200 and Model 66WAN200 hydraulic pumps with specified serial numbers could lead to hydraulic system contamination and failure.

Why matched: Airworthiness Directives; Sikorsky Models S-61L, S-61N, S-61NM, S-61R, S-62A, S-64A, S-64E, S-64F Helicopters, Including Military CH-3C, HH-3C, CH-3E, HH-3E, and CH-54B Helicopters