What was found
PILOT REPORTED THAT IN CRUISE FLIGHT THE ENGINE BRIEFLY INDICATED A RISE IN TORQUE FOLLOWED BY LOSS OF POWER. PILOT SECURED ENGINE AND RETURNED TO APA. MX UNABLE TO START ENGINE FOR TROUBLESHOOTING, FOUND FUEL PUMP DRIVE NOT TURNING. ACCESSED GEARBOX AND FOUND NUMEROUS DAMAGED GEARS/BEARINGS DUE A BROKEN OIL JET (P/N 3103581-1) - THE OIL JET BROKE OFF AND CAUSED FOD DAMAGE TO NUMEROUS COMPONENTS INCLUDING 1ST IDLER GEAR, 2ND IDLER GEAR, SPUR GEAR ASSY/BEARING, INTERMEDIATE SCAVENGE PUMP (CONTAMINATED W/ METAL PARTICLES), COMPRESSOR BEARING (CONTAMINATED), AND OTHER MINOR COMPONENTS. LIMITED GEARBOX REPAIR COMPLETED.