As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
BOS - FLT 4980 - ON TAKEOFF ROLL, TR1 DISAGREE CAME ON THE EICAS, ABORTED TAKEOFF AND RETURNED TO GATE FOR MAINTENANCE. MEL''D TR1 SYSTEM. MAINTENANCE TIGHTENED CANNON PLUG ON T/R STOW SWITCH. OPS CHECK WAS GOOD AND AIRCRAFT WAS RETURNED TO SERVICE. (M)