As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) COPILOTS WINDOW DEPARTED IN-FLIGHT. SUBMITTER SUSPECTED THAT THE WINDOW HAD A NICK IN IT CAUSING IT TO CRACK AND DEPART OUT OF AIRCRAFT. WINDOW IS INSTALLED ON A RUBBER SEAL THAT ATTACHES TO THE DOOR WINDOW FRAME. THE WINDOW IS A LITTLE LARGER THAN THE DOOR WINDOW OPENING. TWO WEEK PRIOR TO THIS INCIDENT THE WINDOW WAS REMOVED AND RE-INSTALLED. (X)