As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ETOPS - APU GENERATOR FAULT DURING MAINTENANCE NO POWER FROM GEN FAULT. // REMOVED AND REPLACED GAPCU PER AMM 24-41-34 FAULT PERSIST. ORIGINAL GAPCU REINSTALLED 2172396 PAUL JOHNSON 26SEP21. REF TSM 24-20-00. REMOVED AND REPLACED APU GEN REF A330 AMM 24-23-51. OPS CHECK, LEAK CHECK, SECURITY CHECK GOOD. NO DEFECTS NOTED. OK FOR SVC. GENERATOR, APU, OFF 33-2423-9-0001 05418 ON 33-2423-9-0001 03440