As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
HORIZONTAL STAB JACKSCREW COMPARTMENT RIGHT SIDE, AFT OF BULKHEAD FRAME BS 1787, STRINGER 3R TO 5R. THE NUTPLATE STRAP CORRODED ON FORWARD END OF APU INLET DOOR HOUSING. REMOVED CORROSION AND FOUND BEYOND LIMITS IAW SRM. REMOVED AND REPLACED THE STRAP IAW SRM.