As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
APU DOOR RIB FWD SIDE OF FWD HINGE HAS WHAT APPEARS TO BE 3 OLD CRACKES BY BOLT AND RIVET HOLES / REMOVED DAMAGE RIB; FABRICATED AND INSTALLED NEW RIB AT RT APU DOOR FWD HINGE FWD SIDE PER REF B737 SRM 51-40-02-0G-0 AND DWG NO 148A6353