B767 Undifferentiated or Other Model
Flight Crew Multiengine; Flight Crew Air Transport Pilot (ATP); Flight Crew Instrument
Flight Crew Last 90 Days 200; Flight Crew Total 3259; Flight Crew Type 3259
Situational Awareness
Aircraft Equipment Problem Critical
Flight Crew Rejected Takeoff; General Flight Cancelled / Delayed; General Maintenance Action
Aircraft
During Takeoff Roll; multiple EICAS Cautions illuminated (AUTOTHROTTLE DISC / AUTOBRAKES). There was an additional sub-EICAS Caution; however we do not recall what the 3rd EICAS Caution was. (Probably FMC but not sure) I made the decision to reject the takeoff below 100 kts.; while analyzing all the EICAS Cautions and recognizing all takeoff data on FMC takeoff page had dumped. Initiated [Rejected Takeoff] at approximately 100 kts.; FO (First Officer) saw approximately 115 kts. as our peak acceleration speed.FO advised ZZZ ATC of our rejected takeoff; we cleared the runway via high-speed and advised we did not need emergency services. Proceeded to hardstand 256; monitored the brake temps and completed the rejected takeoff checklist; advising operations of our issues. Right brakes reached peak temps of 3x6 on brakes and 1x7 momentarily; all cooled below 3 within 20 minutes. Left brakes were 3x4; 1x5 peak temps all cooled below 3 within 15 minutes. Ground personnel were advised to remain clear as we monitored the temps and cooling chart.Maintenance found faults with Thrust Management Computer that resulted in lost comm with all 3 IRU's; both FMC's and both EEC's and indicated that was probably the reason for all the EICAS cautions. Systems reset; faults cleared and systems tested; continued to ZZZ1 with a 1+30 delay.
As I was about to make the 100 kts. call the [Relief Pilot] saw and called out Auto Throttle disconnect I redirected my focus to the EICAS and saw 3 yellow items. Captain XX_14 called Reject. I made the abort call to the Tower and monitored the reject until clear of the Runway. As we cleared the IRO communicated with the cabin and I coordinated with Ground. We did not call for [Crash Fire Rescue Equipment] since we only reached a max of 115-120 kts. We coordinated with the station for a hard stand and Maintenance. We advised the station of hot brakes since the right truck was the left truck was much cooler at once on the stand and safely chocked the brakes began to stabilize and cool. We (the flight deck crew) took a moment to debrief what we saw and discuss what options we had. Maintenance came on board and began the trouble shooting process. A faulted TMC (Thrust Modulation Computer) was found and reset; and we departed without incident about 1:30 late.
B767 flight crew reported a rejected takeoff after multiple EICAS messages and systems failures.