As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LT UPPER WING ACCESS PANEL 521AT HAS AREAS OF CORROSION. REMOVED CORROSION IAW RD 8/4-57-425. MEASURED BLENDED AREAS MIN .215 ACTUAL .183, REF 8/4-57-425 PG 41. PANEL FOUND TO BE OUT OF LIMITS IAW RD 8/4-57-425. RECEIVED NEW PANEL FROM STOCK.