As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
INSPECTION TYPE:1C, LOWER FUSELAGE AFT OF THE MLG CTR EXTERNAL SKIN BULGING AT STA 1581.000 APPROX. REMOVED LONGERON 52 AND FABRICATED REPAIR LONGERON FROM STA Y5-05 TO Y 5-123. INSTALLED REPLACEMENT LONGERON 52 FROM Y5-05 TO Y5-123 REF SRM 51-33-00, PG 30-31 AND SRM 51-33-01 PG 30-31 AND SRM 51-35-01.