What was found
(CAN) BEARINGS IN ACC DRIVE & AGB WERE NEW AT OVERHAUL. ENG RUN IN TEST CELL FOR 4 HOURS. IN A/C FOR 0.2 HRS. AFTER TEST CELL RUN, CHIP DETECTORS INSPECTED, NORMAL. ACC DRIVE UNIT REMOVED & BEVEL GEAR BEARINGS WORN. AGB REMOVED. REMOVED PINION GEAR HOUSING, PINION GEAR BEARINGS WORN, CHIPS FROM PINION GEAR. AGB, ACC DRIVE & ACC DRIVESHAFT REPLACED. ENG LUBE PUMP, AUX SUMP, FUEL/OIL COOLER, ENG OIL TANK & LINES REMOVED & INSPECTED FOR CONTAMINATION. NONE FOUND. ITEMS FLUSHED PRIOR TO INSTALL. A/C DEPARTED ON 2 HOUR FLT, APPROX 25 MIN INTO FLT, CHIP DETECTOR ILLUMINATED, A/C RETURNED TO BASE. PLUGS & FILTER REMOVED & CONTAMINATION FOUND. SYS FLUSHED & A/C FLOWN APPROX 60 FLT HOURS WITHOUT INCIDENT.