What was found
LAS - FLIGHT CONTROL - FLT 0055 - ON POST FLIGHT WALK AROUND MAINTENANCE FOUND A 6' BY 6" SECTION OF BONDED MATERIAL MISSING FROM THE UPPER SURFACE OF THE LT INBOARD AFT TRAILING EDGE FLAP. MAINTENANCE INSPECTED THE UPPER SURFACE OF THE LT INBOARD AFT TRAILING EDGE FLAP AND FOUND DAMAGE NOT TO REQUIRE MONITOR IAW NOTE B OF 757-200 SRM 57-53-01. AIRCRAFT WAS FLOWN TO PHX WHERE THE DAMAGED FILLER WAS REMOVED, AREA WAS PRIMED, AND A NEW REPLACEMENT FILLER WAS INSTALLED. AREA WAS SANDED TO CONTOUR, PRIMED, AND PAINTED IAW 757-200 SRM 51-21-10.