As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING CRUISE SPEED, CO-PILOT UPPER WINDOW WAS LOST IN FLIGHT. CREW PROCEEDED TO LAND AIRCRAFT WITHOUT ADDITIONAL ANOMALIES. WHILE AT BASE TECHNICIAN INSPECTED AIRFRAME FOR ADDITIONAL DAMAGES, NONE WERE REPORTED. WINDOW INSTALLATION WAS INSPECTED AND NO RTV RESIDUE WAS NOTICED BETWEEN THE SEALS AND WINDOW SIDE. SEALS AND WINDOW WILL BE REPLACED, ADHESIVE WILL BE APPLIED BETWEEN SEAL AND WINDOW ON NEW INSTALLATION.