What was found
GRU - FLT 920 - ON LEFT ENGINE START GEN DRIVE LIGHT FAILED TO EXTINGUISH. DEFERRED LT ENGINE IDG AS PER MEL REF MIC SHEET AND PLACARDED. PERFORMED AND SERVICED OIL LEVEL RT/LT AND APU GENERATOR AS REQUIRED PER MPM 24-01. REPLACED LT ENG IDG REQUIRES OPS CHECK LEAK CHECK DFRL.4. REPLACED NR 1 IDG AND SERVICED WITH OIL. LEAK CHECK AND OPS CHECK OK. REMOVED PLACARD AND CLEARED MIC SHEET. (M)