As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
MCN - MAJOR REPAIR - DURING C-17 CHECK EXFOLIATION CORROSION WAS FOUND ON AFT CARGO COMPARTMENT STRINGER 20 LT AT BS 817. MAINTENANCE CUTOUT CORRODED SECTION OF STRINGER 20 LT AT BS 817 AND PERFORMED A HFEC INSPECTION TO VERIFY NO CRACKS EXIST; FABRICATED A HAT SECTION, CHANNEL AND 2 EACH REPAIR ANGLES; INSTALLED REPAIR PARTS IAW B737-300 SRM 53-00-03 FIG 201, PG 201-207.