As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
RIGHT ENGINE FIRE SHUT-OFF HANDLE LIGHT BEGAN BLINKING ON TAKEOFF ROLL. ABORTED TAKEOFF AND RETURNED TO THE GATE. MAINTENANCE FOUND RIGHT PYLON FIRE DETECTOR ELEMENT CONNECTER WIRE CHAFED. REPLACED PYLON AND ENGINE FIRE DETECTOR LOOPS. OPERATIONAL CHECK NORMAL. AIRCRAFT RETURNED TO SERVICE.