B777 Undifferentiated or Other Model
Flight Crew Air Transport Pilot (ATP)
Flight Crew Total 4578; Flight Crew Type 2872
Aircraft Equipment Problem Less Severe; Ground Event / Encounter FOD
Flight Crew Rejected Takeoff; Flight Crew Returned To Gate
Aircraft
Our pushback from the gate and taxi out were uneventful. I was in the right jumpseat and all I can see is the captain's instruments. Everything was done in accordance with SOP. We were cleared for takeoff and right after the 100 knot call; I observed some debris go across the aircraft's path from the right to the left. Just after the 100 knot call and seeing the debris the captain called 'reject; I have the aircraft'. The FO made the call to tower to tell them that we rejected and to roll the trucks. After the aircraft stopped the other IRO made the remain seated call. The captain called for the rejected take-off checklist. I assisted the FO with the checklist. Tower asked us to taxi clear and the captain said we needed a minute. We ran the checklist and as a crew we determined that we could taxi clear and back to the gate. It was at this time I learned the reason for the reject was an over temp on the left engine and the debris occurring roughly at the same time. I looked up the brake temp page in the FM to determine cooling time. The captain taxied back to the gate uneventfully. The hottest brake reached 4.9. We got to the gate and shutdown in accordance with SOP. Maintenance inspected the aircraft and we were told that it was safe to fly.
[Report narrative contained no additional information.]
B777 flight crew reported rejecting the takeoff due to an engine over temperature.