As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(LOG 5428564) WHILE IN CRUISE AT FL350, L1 WINDSHEILD EXPERIENCED A LARGE SPIDERWEB CRACK & ELECTRICAL ARCING ON OUTER PANE. RAN QRH 1.13. R & R L1 (CAPT) WINDOW IAW B737 AMM 56-11. R & R L1 WINDOW HEAT CONTROLLER IAW B737 AMM 30-41 PRECAUTIONARY. OPS, LEAK & PRESSUIZATION TEST GOOD.