What was found
WILLIAMS INTERNATIONAL ENGINE MODEL FJ44-3A, SERIAL NUMBER 141882, FROM AIRCRAFT 525B-0453 (N817BH), WAS RETURNED TO THE REPAIR STATION FOR UNSCHEDULED REPAIR. AIRCRAFT OPERATOR SQUAWKED AN ENGINE NOISE ANOMALY DURING TAKEOFF, PROMPTING A RETURN TO THE DEPARTURE AIRPORT FOR AN UNEVENTFUL LANDING. ENGINE OEM PRODUCT SUPPORT TROUBLESHOT THE ISSUE WITH AN AUTHORIZED SERVICE CENTER, WHICH INCLUDED A BORESCOPE INSPECTION OF THE ENGINE’S COMPRESSOR SECTION. SERVICE CENTER REPORTED A LIBERATED 3RD-STAGE INTERMEDIATE PRESSURE COMPRESSOR (IPC) ROTOR BLADE, RESULTING IN THE ENGINE OEM DIRECTING REMOVAL OF THE ENGINE FOR RETURN TO OUR REPAIR STATION FOR REPAIR. AFTER INDUCTION OF THE ENGINE INTO OUR REPAIR STATION, DISASSEMBLY OF THE ENGINE CONFIRMED ONE LIBERATED 3RD-STAGE IPC ROTOR BLADE. NOTE: THE IPC ROTOR IS A THREE-STAGE AXIAL COMPRESSOR.