What was found
DURING APPROACH LT GENERATOR SOURCE OFF LIGHT ILLUMINATED. TRIED PUTTING GENERATOR BACK ON LINE BUT SOURCE OFF LIGHT REMAINED ON. ACFT GROUNDED. R & R NR 1 ENGINE IDG REF AMM 24-11-11. LEAK CK, NO LEAKS NOTED. NR 1 ENGINE IDG FAILED OPS TEST IAW AMM 24-11-00-700-802. DRIVE LIGHT ILLUMINATED AFTER ENGINE START AT IDLE. RESEATED NR 1 IDG CONNECTORS DP1205, DP1206, REACCOMPLISHED OPS TEST FOR NR 1 IDG. OPS TEST, LOAD TEST, DISCONNECT TEST ALL NORMAL REF AMM 24-11-00-700-802. GCU BITE, NO FAULTS.