What was found
DURING HEAVY MAINTENANCE, CORROSION WAS DISCOVERED ON MAIN CABIN FRAME 66R CHORD AT R2 DOOR SURROUND; ALL WORK ACCOMPLISHED ON NR 40765 REMOVED CORROSION ORIG MAT .150,REMOVED .090, REMAINING .060 FOUND TO BE OUT OF LIMITS PER SRM 53-41-14; FABRICATED, LOCATED AND DRILLED REPAIR PARTS AS PER SRM 53-41-14 CUTOUT DAMAGE AREA PER SRM 53-41-14; ALODINED, PRIMED AND TOP COATED PER SRM 51-21-11 AND 51-75-12, INTALLED REPAIR PARTS REF SRM 53-41-14 AND 51-42-11