What was found
DURING HEAVY MAINTENANCE, CORROSION WAS DISCOVERED ON THE R2 DOOR SILL FWD OF FRAME 66. REMOVED THE DOOR SILL. FABRICATED TWO ANGLES AND ONE FILLER. TREATED, PRIMED, AND TOP COATED THE REPAIR. INSTALLED IAW SRM 53-41-14-300-001, FIG 001, SHT 5 , REPAIR PRICIPAL 9.