As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
KEEL BEAM FOUND WITH CORROSION IN FORWARD CARGO AT BODY STATION 500D+8" TO 500D+12.5" AT LBL 6.5". REPAIRED KEEL BEAM PER B737 SRM 53-60-12, REINSTALLED REMOVED COMPONENTS, PERFORMED LEAK CHECK, NO LEAKS PRESENT AT THIS TIME IAW B737-300 MM 36-19-15.