Airworthiness Directive · Amendment 39-13906 · Pratt & Whitney Canada PT6A-60A and PT6A-65B Turboprop Engines
Pratt & Whitney Canada PT6A-60A and PT6A-65B Turboprop Engines
This AD applies to Pratt & Whitney Canada (PWC) PT6A-60A turboprop engines, with an engine serial number (SN) which is before and includes SN PCE-PK0425, and SNs PCE-95006 thru PCE-95828, and PT6A-65B turboprop engines, with a SN which is before and includes SN PCE-PP0062, and PCE-32001 thru PCE-32644 and all engines converted to engine model PT6A-65B, that have Woodward propeller governor assemblies, part number (P/N) 8210-212H, installed. These engines are installed on, but not limited to, Raytheon Super Beech King Air 300/350 and Raytheon Beech 1900/1900C airplanes.
The FAA is adopting a new airworthiness directive (AD) for Pratt & Whitney Canada (PWC) PT6A-60A and PT6A-65B turboprop engines. This AD requires replacing Woodward propeller governor assemblies, part number (P/N) 8210-212H. This AD results from six incidents during airplane acceptance flight testing where directional control of the airplane was difficult to maintain during landing. We are issuing this AD to prevent loss of directional control and damage to the airplane.
Compliance with this AD is required as indicated, unless already done.
Replace Woodward propeller governor assemblies, P/N 8210-212H, at the next access to the governor or within six months after the effective date of this AD, whichever occurs earlier. Information on replacing the Woodward propeller governor assembly can be found in Pratt & Whitney Canada Service Bulletin No. PT6A-72-13354, Revision 1, dated July 11, 2003.
(g) After the effective date of this AD, do not install any Woodward propeller governor assembly, P/N 8210-212H, on any engine.
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.
