As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FUSELAGE STA 1000 CHORD IS CRACKED BETWEEN STR 37L-38L NEAR BATHTUB FITTING AT EXTERIOR SIDE UNDER RAM AIR DUCT. REMOVED DAMAGED CHORD FROM STA 1000 BETWEEN STR 37-38 LT AND REPLACED PER B747 SERVICE BULLETIN 747-53A2471 FIG 13 AND EO 53-747-1072-90 REV A PART 2.