What was found
FRAME SECTION AT FS 333.00 FROM STRINGER 25L TO 25R IS CORRODED. REMOVED FASTENERS FROM FRAME SECTION AT FS 333, FROM STR 23L TO 23R IAW SRM 51-42-06 AND 51-42-21. FOUND CORROSION TO BE OUT OF LIMITS IAW SRM 53-21-15 AND 53-00-00. REMOVED FRAME SECTION FROM ACFT IAW SRM 51-42-06 AND 51-42-21. RECEIVED NEW SERVICEABLE FRAME SECTION. INSTALLED NEW SERVICEABLE FRAME SECTION AT FS 333 BETWEEN STR 23L AND 23 RT IAW SRM 51-42-06 AND 51-42-21. APPLIED FILLET SEAL TO NEW SERVICEABLE FRAME SECTION TO FUSELAGE MATING AREA IAW SRM 51-23-00.