As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING C-1 CHECK AGING AIRCRAFT INSPECTION, IDENTIFIED EXTERNAL FUSELAGE SKIN REPAIR INSTALLED WITH OUT FAA APPROVED DATA. REPAIR IS LOCATED AT STA 640 BETWEEN STRINGERS 24L AND STR 28L REMOVED AND REPLACED REPAIR PER B727 SRM 53-30-3 FIG 5 PG 22.