As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT GROUNDED FOR HEAVY MAINTENANCE. CORROSION ON THE FORWARD SIDE OF FRAME 1360 JUST INBD OF STR 28R. SHEAR TIE ATTACHING TO FRAME CORRODED OUT OF LIMITS. R & R SHEAR TIE IAW DWG 140N 2002 AND SRM 51-40-02. BLENDED AREA ON FRAME FOUND TO BE WITHIN LIMITS IAW SRM 53-00-07 ORIGINAL THICKNESS .071". MAXIMUM MATERIAL REMOVED .003", NEW THICKNESS .068".