As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
MIA - CAPTAINS SLIDING WINDOW OPENED DURING TAKEOFF ROLL. EMERGENCY DECLARED FLIGHT RETURNED MIA LANDED WITHOUT INCIDENT. AIRCRAFT REMOVED FROM SERVICE. FOUND WINDOW LOCKING CABLE BROKEN. REPLACED CAPTAINS SLIDING WINDOW. SYSTEM GROUND CHECK NORMAL OPERATION.