What was found
BOS - LEFT ONE LIGHT ILLUMINATED AND GEN DISCONNECTED. CONFIRMED DELTA P FILTER BUTTON POPPED. REPLACED LEFT IDG. NEW IDG DEFECTIVE FROM STOCK AS UNABLE TO RESET FIELD, S/N CO105 DFW. NEEDS ANOTHER IDG. NIS BOS. PLACARDED LEFT IDG INOP PER MEL REF 2401 AUTH 07-158DC-B. BOTH IDGS SERVICED FULL ENTERED IN MIC. REPLACED LEFT ENGINE IDG PER MM. ALL CHECKS TEST GOOD. REMOVED PLACARD MEL 7-158DC-B. CLEARED MIC. (M)