A300
Maintenance Airframe; Maintenance Powerplant
Communication Breakdown; Workload; Troubleshooting
Aircraft Equipment Problem Critical; Deviation / Discrepancy - Procedural FAR; Deviation / Discrepancy - Procedural Maintenance; Deviation / Discrepancy - Procedural Published Material / Policy
Flight Crew Overcame Equipment Problem; General Maintenance Action
Human Factors; Aircraft; Procedure; Staffing
Working deferral; low IDG oil press ECAM advisory. We replaced the gcu; I don't remember the reason we came to the conclusion that was the problem. We checked the IDG oil service and the DPI with no faults found. I believe we ran the engine and found no faults; but not 100% sure. Better documentation of steps taken during troubleshooting.
Technician reported troubleshooting an IDG problem led to the decision to replace the Generator Control Unit; which led to confusion as to whether it corrected the problem; or not.