As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) EMERGENCY EXIT WINDOW OPENED ON TAKEOFF. WINDOW WENT FROM VENT POSITION TO EXIT POSITION INTO FREE AIR AND HINGE BROKE OFF AND WINDOW DETACHED FROM AIRCRAFT. IT IS POSSIBLE THAT AT SOME PRIOR FLIGHT THE WINDOW WAS OPENED INCORRECTLY. WE HAVE OPERATED A FLEET OF 7 AIRCRAFT WITH THE SAME TYPE WINDOW WITH NO PRIOR PROBLEMS. (TC NR 20060512001)