What was found
OUT OF 24,000 FT THE NR 1 GEN DRIVE LT CAME ON, NR 1 GEN OFF LT CAME ON, NR 1 SOURCE LT CAME ON. ACFT GROUNDED. DIVERSION TIME - 25 MINUTES. INSPECTED & FOUND NR 1 IDG OIL FILTER CONTAMINATED, REPLACED NR 1 IDG IAW AMM 24-11-11-000-801 & 24-11-11-400-801, FLUSHED IDG OIL LINES IAW AMM 24-11-41, REPLACED NR 1 IDG AIR OIL COOLER IAW AMM 24-11-21-000-801 & 24-11-21-400-801. OIL SERVICE, LEAK & OPS CK REQ. REPLACED NR 1 IDG OIL COOLER IAW 73-11-06-000-801 SERVICED IDG OIL IAW AMM 12-12-21-600-801. RAN ENGINE IAW 71-00-00-700-801 AND PERFORMED OPS TEST FOR NR 1 IDG IAW 24-11-00-700-802. LEAK AND OPS CHECK GOOD.