As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WIDESPREAD PITTING CORROSION ON THE RIGHT EXTERNAL SKIN OF AUXILIARY POWER UNIT ACCESS DOOR. EVALUATE AND RECTIFY. RIGHT AUXILIARY POWER UNIT ACCESS DOOR SKIN WAS REMOVED AND REPLACED IN ACCORDANCE WITH EA F5240-126205, REPAIR CLASSIFIED AS MINOR AS PER GMM 6-2-100 CRITERIA.