As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING C CHECK FOUND THE AFT CARGO COMPARTMENT STR 27R AT BS 727+16 KEEL BEAM CHORD WITH CRACK. FUSELAGE KELL BEAM SECTION REPAIRED AT STR 27R, BETWEEN BS 727+9.75 AND BS 727A+7.25 DUE TO CRACK IAW COOPESA E.O NR COO-3-53-585-01. DOCUMENTED ON FAA FORM 8110-3 APPROVED BY FAA DER.