Date: 201508
Local time of day: 1201-1800
Location: ZZZ.Airport, US
Light: Daylight
Aircraft: B757-200
Operator: Air Carrier
Operating under: Part 121
Flight plan: IFR
Mission: Passenger
Flight phase: Takeoff / Launch
ATC / advisory: Tower ZZZ
Aircraft component: Turbine Engine
Component problem: Malfunctioning
Reporter organization: Air Carrier
Reporter function: Captain; Pilot Not Flying
Reporter qualification: Flight Crew Air Transport Pilot (ATP)
Human factors: Fatigue; Situational Awareness
Second reporter function: Pilot Flying; First Officer
Anomaly: Aircraft Equipment Problem Less Severe; Deviation / Discrepancy - Procedural MEL / CDL; Deviation / Discrepancy - Procedural Published Material / Policy; Flight Deck / Cabin / Aircraft Event Illness / Injury
Detector: Person Flight Crew
When detected: In-flight
Result: Flight Crew Rejected Takeoff; Flight Crew Returned To Gate
Contributing factors: Aircraft; Human Factors
Primary problem: Human Factors

Narrative: ATC cleared us for takeoff; taxied onto runway; stopped the aircraft and transferred controls to the FO. He advanced throttles toward manual max TO EPR setting; FO said 'set power'; when setting power I noticed amber line on EPR below green carrot; looked at the airspeed as it approached eighty knots; then checking engine instrument I had amber indications on both engines; the right EGT rising through 79; and the left N3 amber. For safety of flight I chose to abort not sure of the reliability of both engines. Started the abort; called 'abort'. The RTO applied brakes aggressively. The aircraft was slowed and we exited the runway. Engine instruments were now at normal indications. ATC asked reason for abort we said indications; we requested a place to analyze the aircraft (run checklist) [and] they cleared us to taxi to the cargo pad straight ahead. FO made PA to the pax regarding the abort. Upon arrival at pad before we could analyze the aircraft; the FA called up and advised of a medical emergency. We did not know the severity of the medical emergency so; we requested a gate from ATC. We parked at gate; ran parking checklist; talked to FA about medical which ended up being a panic attack. Then had agent to deplane pax. FO went out for post flight walk around the aircraft; [and] FO informed me on his return that the fuse plugs blew. I made phone calls to dispatch; the duty pilot; and mx control. Then went out myself to check the aircraft. Then I called the 757 fleet manager. Outside mx arrived promptly to the aircraft; he asked what happened and to write it up in the logbook. Completed logbook. After pax deplaned and aircraft cleaned; I requested a post briefing with the crew. The extra taxi for the medical emergency added to the already hot brakes causing the fuse plugs to blow.I feel part of my abort decision was influenced by earlier events in the week. I had a stuck throttle; I heard about a stuck elevator abort; the failure of one engine is manageable when the other engine is at a hundred percent. So even though we briefed the takeoff; in that split second my mind said something's not safe and I aborted. Both the FO and I are new to the aircraft; better AOM/MEL procedures would be of help. The aircraft had [an] MEL which was a factor in the event. It had numerous notes that are different from standard; we looked them up and briefed them before leaving. The takeoff was uneventful but not sure we missed something regarding the MEL we spent cruise studying the manuals. After studying we still weren't sure if we were setting up the aircraft right per the MEL. I called the 757 fleet manager for clarification; we changed the settings for the takeoff.


Second narrative: Make improvements to the Minimum Equipment List regarding the operations of a deferred Autothrottle System. Part of the deferral is very vague. It states: 'Assumed temperature (if used) will not be available.' I understand what it means now; but at the time I assumed that the 'Assumed Temperature method' for takeoff was not available. It would be easier to understand the terminology if it were written: 'Assumed Temperature (if used) will require manual setting'. This was not a direct cause for the aborted takeoff; but it may have prevented the event from occurring due to a lower power setting.


Synopsis: B757 flight crew reported they rejected the takeoff when engine EGT temperatures reached the amber range.