As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT DEPARTED LAX PASSING THROUGH 18000 FT CREW HEARD A POP AND PILOT'S WINDSHIELD OUTER PLY CRACKED. CREW DECLARED EMERGENCY AND RETURNED TO LAX. LANDING WAS UNEVENTFUL. INSPECTION OF WINDSHIELD BY STANDARD AERO - LAX FOUND OUTER PLY WINDSHIELD HAD FAILED. STANDARD AERO - LAX CURRENTLY REPLACING WINDSHIELD WITH NEW.