As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
BOI FLIGHT NR 2407: CLIMBING THROUGH 21,000 FEET, CAPTAIN'S WINDSHIELD CRACKED OVER MAJORITY OF AREA. AIRCRAFT RETURNED TO FIELD. MAINTENANCE REMOVED AND REPLACED CAPTAINS WINDSHIELD IAW Q400 AMM 56-10-01, PG 401-415. GROUND OPS CHECK NORMAL. AIRCRAFT RETURNED TO SERVICE.