As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON CLIMBOUT THROUGH FL 280 L1 WINDSCREEN CRACKED SIMUTANOUSLY WITH OVERHEAT LIGHT. COMPLIED WITH BOTH CHECKLISTS. GROUNDED - YES. REMOVED AND REPLACED THE L1 WINDOW IN FLIGHT DECK PER B737-800 AMM 56-11-11-400-801 TESTED WINDOW HEAT SYSTEM PER AMM 30-41-00-710-801 OPS NORMAL. COMPLETED AIR OUTLET VALVE INSTALLATION TEST PER AMM 56-11-11-710-002 PRESSURIZED-NO LEAKS NOTED.