What was found
DURING CHECK-C MAINTENANCE, WINDOW CUT OUTS HAD SIGNS OF STATIC DISCHARGE AT CUTOUT 22L BETWEEN STA 617 AND 638, CUT OUT 30L BETWEEN STA 769 AND 788, AND CUT OUT 33L BETWEEN STA 845 AND 864. INSTALLED REPAIR DOUBLER IN EACH AREA PER ARA 16490.