As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CORROSION FOUND ON SERVICE DOOR LOCATED UNDER SIDE OF BOTTOM PAN. REFER TO SRM 52-41-14 FOR STRUCTURAL IDENTIFICATION. (FILED CLOSED) REMOVED AND REPLACED SERVICE DOOR LOWER AFT BEAM IN REF TO SRM 51-40-11 / 51-42-06 / 51-42-13. COMPLIED WITH TASK CARD 51-900-1003-SKY. COMPLETED M-337