As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
HEAVY CORROSION ON THE FLANGE OF STRINGER 51 RT, BETWEEN FRAME 45-46, REMAINING THICKNESS AFTER BLENDING IS OUT OF LIMIT. REPAIR PERFORMED BY CUTTING OUT DAMAGED PART AND INSTALLING A REPAIR ANGLE (4 MM THICK) IAW EA 6-5318-81086 AND RAS 034265/005/2004 ISSUE A.