As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FOUND PREVIOUS UNDOCUMENTED REPAIR TO THE AFT FLANGE OF THE BOTTOM FRAME AT STA 258 TO HAVE DEEP CORROSION FROM LBL 7.75 TO LBL 12.25. THE REINFORCEMENT ANGLE HAS SINGLE ROW RIVETS FROM LBL 12 TO LBL 17. REF SAAB STATEMENT 340 SDS 023532 DATED 1-24-2012, TD 340-53-12-10 AND NON ROUTINE 137670 SEQ 343 FOR FOR CORRECTIVE ACTION DETAILS. CONTROL# 343-25.