What was found
MCI - DURING OP 15 MAINTENANCE CHECK, FOUND LEFT WING STATION XRS 164 INSIDE TANK, FWD FACE OF LOWER SPAR CAP, VERTICAL LEG HAD CRACK EXTENDING INTO LOWER RADIUS BELOW INBOARD FLAP BARREL NUT ATTACH POINT. INSTALLED NEW SPAR CAP AND SPLICE PER DWG JO60165 AND STD PROCEDURE PER SRM 51-01, PAGE 1. (M)