What was found
DURING M-CHECK, WHILE PERFORMING VTP MOD INSPECTION, HOLE NR 173 UPPER SIDE WAS FOUND OUT OF LIMITS EDGE MARGIN AT FRAME 86, STR R2B ON RT SIDE OF VERTICAL STABILIZER. INSTALLED REINFORCEMENT DOUBLER AND SHIM AT FRAME 86, STRINGER 2B ON RT SIDE OF VERTICAL STABILIZER IAW ER/A 543321-14AD.