Airworthiness Directive · Amendment 39-11164 · Pratt & Whitney JT8D-200 Series Turbofan Engines
Pratt & Whitney JT8D-200 Series Turbofan Engines
Pratt & Whitney (PW) Models JT8D-209, -217, - 217A, -217C, and -219 turbofan engines that have not incorporated PW Service Bulletin (SB) No. 6193, dated October 31, 1994, or with fan blades, Part Numbers (P/N's) 798821, 798821-001, 808121, 808121-001, 809221, 811821, 851121, 851121-001, 5000021-02, 5000021-022, and 5000021-032 installed. These engines are installed on but not limited to McDonnell Douglas MD-80 series aircraft.
This amendment supersedes an existing airworthiness directive (AD), applicable to Pratt & Whitney JT8D-200 series turbofan engines, that currently requires periodic inspection of fan blades for locked rotors and foreign object damage (FOD), unlocking of shrouds if necessary, lubrication of fan blade shrouds, and dimensional restoration of the fan blade leading edge. In addition, that AD requires installation of improved design fan blades as terminating action for the inspections. This AD will reduce the lubrication interval, and require removal of rotors that experience repeat lockups within 225 cycles in service. This supersedure is prompted by reports of twenty-five fan blade failures to date. The actions specified by the AD are intended to prevent fan blade failure, which can result in damage to 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.
