As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING TAKE OFF ROLL AT APPROX 110 KTS THE CAPT ESCAPE WINDOW OPENED. THE WINDOW WAS CLOSED AND LOCKED, VERIFIED DURING PREFLIGHT PREPARATION. REJECTED TAKE OFF WAS PERFORMED. IN ACCORDANCE WITH AMM SUBTASK 56-12-11-210-054-A THE CHECK OF THE SLIDING WINDOW LOCKING WAS PERFORMED. THE WINDOW WAS INSPECTED INTERNAL AND EXTERNAL FOR CONDITION AND WAS FOUND IN NORMAL OPERATION.