As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT GROUNDED. LOWER FUSELAGE FWD CARGO DOOR CUTOUT BS 492 AT STR24R DOORWAY FRAME WEB WITH CRACK. REPAIRED INTERIOR FUSELAGE FRAME AT BS 492 BETWEEN STR16R AND STR28R DUE TO CRACK IAW ALERT SB737-53A-1228 SECTION 3 REF DWG-65-20723 REV D.