As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING MAINTENANCE BASE VISIT FOUND FUSELAGE SKIN CRACKED IN UPPER AFT CORNER OF FIRST OFFICERS WINDOW CUT OUT. THE CRACK LENGTH WAS FOUND TO BE 58 MILLIMETERS IN LENGTH. THE AIRCRAFT WAS REMOVED FROM SERVICE. REPAIRED SKIN WITH DOUBLER IAW EO EM-53MR-1536. THE AIRCRAFT WAS REMOVED FROM SERVICE.