As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) WHILE LOOKING AT FUSELAGE ON THE LT SIDE,THE TECHNICIAN WAS QUESTIONNING WHAT SEEM TO BE A SCRATCH MARK. AFTER FURTHER INVESTIGATION AND INTERIOR LINING REMOVAL,IT WAS DISCOVERED THAT THE SCRATCH WASINDEED A CRACK IN THE FUSELAGE LOCATED AT FUSELAGE STA 771, BETWEN STRINGER 16L AND 17L.THE CRACK WAS 2 INCHES LONG,BETWEEN STA 771 AND STA 773 ABOVE FLOOR LEVEL. CRACK WAS REPAIRED USING 737 SRM.