What was found
WHILE IN FOR C-CHECK, MAINTENANCE FOUND, WHILE ACCESSING 870 PRESSURE SEAL RETAINER, CORROSION UPPER SIDE OF TOP SKIN STA 870, LBL 45-65, WL 190. REMOVED CORROSION, REPAIRED SKIN PER USP E.O. 727-57-1648.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
WHILE IN FOR C-CHECK, MAINTENANCE FOUND, WHILE ACCESSING 870 PRESSURE SEAL RETAINER, CORROSION UPPER SIDE OF TOP SKIN STA 870, LBL 45-65, WL 190. REMOVED CORROSION, REPAIRED SKIN PER USP E.O. 727-57-1648.