As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DUE TO NR 2 GEN FAULT, STARTED APU & THEN APU GEN FAULTED. INFO ONLY, MASSIVE AMOUNT OF RAIN & LIGHTNING STRIKE TWO LEGS PRIOR. APU HAD FAULTED FIRE TRIP ON GND POWER CONTROL UNIT. R & R THE APU GEN CONTROL UNIT IAW A & B AMM CHPT 24-22-12-04. RAN APU GEN UNDER LOADS FOR 30 MINS NO FAULTS. ACFT OK FOR SERVICE.