As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FS280 BEAM TOP FLANGE (MPN CC670-34175-3) AND FWD J-ANGLE (MPN CC670-34095-1) AT COCKPIT THRESHOLD ARE CORRODED BEYOND LIMITS (EXFOLIATION). C/A: COMPLIED WITH SERVICE BULLETIN 670BA-53-041 REV.F, PART A - CENTER FUSELAGE FS 280 TO FS 477 - REINFORCEMENT OF THE FS 280 SEMI-PRESSURE BULKHEAD INCORPORATED.