As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING INSPECTION OF THE APU MUFFLER FOR CRACKS FOUND DELAMINATION ON THE OUTER TAIL CONE AREA 6' FROM THE DOOR ACCESS OPENING. / REPAIRED DAMAGE ON APU TAILCONE OUTER SURFACE. BONDED REPAIR PLIES AND CURED. TAP TEST GOOD. RESTORED DECROTIVE FINISH. IAW B737-700 SRM 57-80-70-2R-1 REV 68; SRM 51-70-04-2R-8 REV 68; SRM 53-00-50-2R-0 REV 68; SRM 51-70-04-2R-11 REV 68; B737 AMM 51-21-99-300-801 REV 68.