B757-200 flight crew reported a rejected take off at 90 knots was caused by an engine not making projected EPR. The flight crew returned to the gate for maintenance action.
Synopsis
B757-200 flight crew reported a rejected take off at 90 knots was caused by an engine not making projected EPR. The flight crew returned to the gate for maintenance action.
Narrative
APS (Automated Performance System) required a max thrust takeoff from XXR due to the meteorological conditions at the time (rain and wet Runway). I verified the engines were spooling up appropriately prior to releasing the brakes and pushing the thrust tile. Approaching 80 knots. I had not heard 'thrust set.' I looked to verify and saw the left engine was at the required 1.72 EPR; but the right engine was only at 1.62 EPR. I advanced the right thrust lever to the stop with no change. Going through 80 knots; it was obvious thrust was not set and in the interest of safety I called for and initiated the reject around 90 knots. My decision to reject was based on a potential engine failure and or aircraft unable/unsafe to fly situation. Once the reject was ensured; I kicked off the auto brakes and rolled the plane down to Taxiway 1 and had my First Officer (FO) advise Tower of the reject. At the completion of the Rejected Takeoff and after landing checklists; I asked my FO to monitor the radios and run the brake cooling charts while I called Dispatch. We took our time to complete the QRH while monitoring the BTMS (Brake Temperature Monitoring System). Since we were not within the caution or fuse plug melting zone; we determined it was safe to coordinate a block turn back and returned to the Gate. Current maintenance history shows engine runs with similar EPR numbers to what we experienced. It appears a faulty fuel flow governor and high pressure fuel pump is the issue.
Second reporter narrative
Rejected takeoff at 90 knots for RH ENG LO EPR.
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Source: NASA Aviation Safety Reporting System (public domain). Reports are voluntary submissions and are not verified by NASA.