What was found
LHR - FLT 121 - LEFT GENERATOR FAILED ONE HOUR INTO FLIGHT ATTEMPTED ONE RESET UNABLE TO RESET STARTED APU. REPLACED LEFT GCU AND LEFT IDG. ACCOMPLISHED ENGINE RUN AND LEAK CHECK ALL OPS NORMAL. (M)
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
LHR - FLT 121 - LEFT GENERATOR FAILED ONE HOUR INTO FLIGHT ATTEMPTED ONE RESET UNABLE TO RESET STARTED APU. REPLACED LEFT GCU AND LEFT IDG. ACCOMPLISHED ENGINE RUN AND LEAK CHECK ALL OPS NORMAL. (M)