What was found
DURING SCHEDULED NR 4 MAINTENANCE CHECK, FOUND CORROSION IN NR 1 UPPER WING PLANK NUT PLATE HOLES FOR WING TO FUSELAGE FILLET. REPAIRED PLANK PER LUNDBY DESIGN SERVICE DWG 188372 AND L-188 SRM 51-2-12.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
DURING SCHEDULED NR 4 MAINTENANCE CHECK, FOUND CORROSION IN NR 1 UPPER WING PLANK NUT PLATE HOLES FOR WING TO FUSELAGE FILLET. REPAIRED PLANK PER LUNDBY DESIGN SERVICE DWG 188372 AND L-188 SRM 51-2-12.