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-13 CHECK A 1" CRACK WAS FOUND ON OUTER SKIN NEAR THE R/H MAIN LANDING GEAR WHEEL WELL KEEL BEAM AREA, BETWEEN 2 REPAIR DOUBLERS, BS 707. MAINTENANCE REMOVED DAMAGED SECTION OF OUTER SKIN, FABRICATED A SECTION OF KEEL BEAM OUTER SKIN AND 3 EACH REPAIR DOUBLERS, AND INSTALLED REPAIR PARTS IAW AWA E.R. 15-5315-02247-TB2.