What was found
WHILE WORKING NR 0648 FOUND CORROSION (C53-224-02) UNDER LAP AT FRAME LOCATIONS FROM 640 TO 720 STRINGER 4 RT. *S/D* REPAIRED LOWER SKIN AT STR 4R, BS 460 TO 480 AND LOWER SKIN AT STR 4R, BS 480 TO 740 WAS REPAIRED ON NR 0648 IAW FED-EX EA NR 7-5310-32037.