As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
UPPER FUSELAGE DOOR FRAME SUPPORT INTERCOSTAL AT BS 294 BETWEEN STR 12R AND STR 13R CRACKED. DURING INSPECTION OF THE SURROUND STRUCTURE OF THE R1 ORIFICE, A CRACK WAS NOTED ON AN ANGLE THAT ATTACHES AN INTERCOSTAL BETWEEN S12 AND S13, RIGHT TO THE AIRCRAFT SKIN. THE ANGLE WAS REPLACED AS ALLOWED BY SB 53A1241. REF KFC MCO 3218, WO 1365645.