B737 flight crew reported a high EGT indication on the #2 engine during taxi. The crew shut down the affected engine and taxied back to the gate.
Synopsis
B737 flight crew reported a high EGT indication on the #2 engine during taxi. The crew shut down the affected engine and taxied back to the gate.
Narrative
On close interval taxi up to hold short line on [Taxiway] 1 to RWY XXL at ZZZ we felt what appeared to be excessive vibration from A320 in front of us taxing into position for takeoff. Scan of engine instruments revealed right engine EGT red and full scale defection.I pulled the Thrust levers to idle with no right engine EGT reduction; I moved the right engine start lever to off position. I scanned for indications of fire/overheat. There was no master caution; no fire warning; no fire handle light; no bell. The vibration stopped and the EGT indicator no longer was red. I Asked Crash/Fire/Rescue to inspect right engine and checked with cabin crew for assessment. Completed QRC/FM (Flight Manual) non normal checklist for engine overheat. After CFR/cabin crew and flight deck assessment coordinated with ATC for CFR (Crash Fire Rescue) escorted return to gate. Upon return to gate disembarked passengers via jet bridge; debriefed with Local Maintenance; CFR team; Dispatch and Maintenance Control.
Second reporter narrative
While waiting for takeoff on RWY XXL on Taxiway 1 at ZZZ we had a number 2 engine overheat. The Aircraft Y aircraft just in front of us was taking the runway and as Aircraft Y pushed the power up; we also pushed the power up to advance to the hold short line. Almost immediately as the power was advanced to move forward; there was loud and fairly violent shaking of the aircraft; similar to moderate/severe turbulence. At first; I thought the Aircraft Y aircraft had pushed the power up excessively and we were experiencing the effects of being behind an aircraft advancing power; but upon engine scan; the number 2 engine was overheating. The CA saw it first and announced an overheat situation on the #2 engine. No fire indications were associated. The CA ensured the right thrust lever was closed (idle) and then placed the right engine start lever to cutoff. The overheat indications and shaking of the aircraft stopped almost immediately. We let Tower know we had experienced an engine problem and asked for CFR (Crash Fire rescue) response. The aircraft on the ground behind us confirmed flames had been coming from our right engine. We accomplished the QRC for an Engine Overheat and the non-normal for Engine Fire or Engine Severe Damage or Separation. After ZZZ CFR had visually inspected our aircraft and surrounding area; we coordinated for single engine taxi back to the gate. Initial maintenance inspection at the gate indicated that a fuel pump had malfunctioned. Overall CFR and ATC response was excellent at ZZZ; and Company had identified a new aircraft for the ZZZ-ZZZ1 flight before we opened the door at the gate.
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Source: NASA Aviation Safety Reporting System (public domain). Reports are voluntary submissions and are not verified by NASA.