Airworthiness Directive · Amendment 39-10817 · Pratt & Whitney Canada PW530A Series Turbofan Engines
Pratt & Whitney Canada PW530A Series Turbofan Engines
Pratt & Whitney Canada (PWC) PW530A series turbofan engines, with serial numbers (S/Ns) PCE-DA0001 through PCE- DA0059, and S/Ns PCE-DA0061 through PCE-DA0064 (S/N PCE-DA0060 is not affected, as it was shipped with the increased type design clearance). These engines are installed on but not limited to Cessna Citation Model 550 Bravo aircraft.
This document publishes in the Federal Register an amendment adopting Airworthiness Directive (AD) 98-17-10 that was sent previously to all known U.S. owners and operators of Pratt & Whitney Canada (PWC) PW530A series turbofan engines by individual letters. This AD requires recording engine surge events in the aircraft maintenance records. If an engine surge event is experienced, this AD requires, prior to the next flight, inspecting that engine for evidence of second stage stator vanes rubbing on the compressor rotor. In addition, this AD requires reworking all affected engines to increase the clearance between the second stage stator vanes and the compressor rotor. This amendment is prompted by reports of 4 inflight engine shutdowns and 2 additional unscheduled engine removals for significant compressor rotor damage. The actions specified by this AD are intended to prevent an inflight engine shutdown due to rubbing of the second stage stator vanes on the compressor rotor.
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.
