B747 flight crew reported rejected takeoff due to a fire warning from one of the engines.
Synopsis
B747 flight crew reported rejected takeoff due to a fire warning from one of the engines.
Narrative
Engine Fire Warning During Takeoff Roll. While departing from Runway XXL; we experienced an engine fire warning for Engine #4 during the takeoff roll. The situation was managed in accordance with established procedures; and no significant issues arose during the event.After being cleared for takeoff on Runway XXL; we began the takeoff roll. Power was set successfully following brake release. At approximately 65-75 knots; the crew received an engine fire warning for the #4 engine accompanied by the associated aural tones.The crew immediately initiated a rejected takeoff (RTO). The Captain executed the RTO procedure in accordance with SOPs.The aircraft decelerated safely; with no significant issues to report. After bringing the aircraft to a complete stop; the crew initiated the Fire on the Ground checklist. The FIRE ENG warning light extinguished upon moving the #4 engine fuel cutoff switch to the cutoff position. Aircraft Rescue and Fire Fighting (ARFF) units and ATC were notified. The fire chief inspected the #4 engine and confirmed that no fire was present. Following ARFF clearance; we taxied the aircraft safely back to company operations.The event was managed efficiently and without further complications. The safety of the crew and aircraft was maintained throughout the procedure.
Second reporter narrative
An incident occurred involving an engine fire warning during the takeoff roll on runway XXL. The flight crew promptly responded to the alert by rejecting the takeoff at 70 knots. This report details the sequence of events; actions taken by the flight crew; and the response of the Aircraft Rescue and Fire Fighting (ARFF) team. During the takeoff roll on runway XXL; the flight crew received an EICAS (Engine Indicating and Crew Alerting System) ENG fire warning for engine 4 at a speed or around 70 knots. Recognizing the severity of the situation; the crew elected to reject the takeoff. They immediately shut engine 4 down and notified the control tower of their intention to stop on the runway. Upon halting the aircraft; the crew requested the assistance of the Aircraft Rescue and Fire Fighting (ARFF) team. Following standard safety protocols; the crew executed the Quick Reference Handbook (QRH) procedures to address the fire warning. The aircraft was brought to a stop at the intersection of 1 taxiway; strategically positioning it to grant the ARFF team optimal access for their assessment and intervention. The ARFF team arrived promptly on the scene and conducted a thorough inspection of engine 4. Utilizing thermal imaging technology; they detected no signs of smoke or fire; leading the crew to conclude that an evacuation was unnecessary. Subsequent thermal checks confirmed that engine 4 exhibited no abnormal heat signatures; suggesting a false alarm or sensor malfunction or bleed issues. With the situation under control and no immediate threat detected; the aircraft was safely taxied back to the ramp.
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Source: NASA Aviation Safety Reporting System (public domain). Reports are voluntary submissions and are not verified by NASA.