Airworthiness Directive · Amendment 39-10054 · Hamilton Standard 54H60 Series Propellers
Hamilton Standard 54H60 Series Propellers
Hamilton Standard Models 54H60-77, -91, -111, - 117, -123, and -125 propellers, with serial numbers listed in Hamilton Standard Alert Service Bulletin (ASB) No. 54H60-61-A133, Revision 1, dated May 29, 1997. These propellers are installed on but not limited to Lockheed Martin C-130, C-130A, 382 series, L-100 series, L-188 series; Aero Space Lines Model 3775GT, and Lockheed Martin (Convair) CV580 series aircraft.
This amendment adopts a new airworthiness directive (AD) that is applicable to Hamilton Standard 54H60 series propellers. This action requires removing from service affected propeller blades, and returning those blades to the manufacturer or an approved facility for inspection, rework, and return to service. This amendment is prompted by reports of a propeller blade manufacturing defect. The actions specified in this AD are intended to prevent propeller blade fracture due to the manufacturing defect, which could result in propeller blade separation and loss of control of the aircraft.
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.
Propellers
