2023-08 · NASA ASRS report 2029352
Air carrier flight crew reported a number 2 engine fire warning message during arrival taxi. Flight crew completed the QRH procedures and requested Airport Rescue and Fire Fighting assistance who followed aircraft to parking since fire message had extinguished.
After landing in ZZZ while on the taxi to parking we got a fire warning for engine 2 with the accompanying fire bell/lights. I was PM and advised the ATC of the fire warning and requested the fire department respond. The first officer PF (Pilot Flying) brought the aircraft to a stop in the intersection of taxiway 1 and 2. We completed the immediate action items/emergency checklist for the engine fire warning. The fire warning stopped sometime after firing the first bottle as the time was approaching for firing the second bottle. During this process I asked ATC if they could observe anything; and they asked the aircraft behind us who reported no fire observed. Fire Department responded and I was in communication with them on VHF. I advised the fire department of which engine had the fire warning and that engines 1 and 4 were still running before they made an inspection. The fire department reported no fire observed but reported vapor/smoke was coming from the #2 engine tail pipe. I assumed this to be from the fire bottle or the normal vapor that can be seen after shutdown. I could detect a slight odor in the air. The fire department advised ATC they would follow us to parking. ATC cleared us to taxi to parking after we restarted engine #3 which had been shutdown for the long taxi in. The first officer asked if I wanted to taxi in given the issues. At that point we switched PF/PM duties and I taxied the airplane to parking. I asked our 3rd seat first officer to advise dispatch and then while taxing to advise company. Once parked I advised the fire department when the engines were shut down so they could inspect further. I spoke with the fire department in person and maintenance before leaving the flight deck. Maintenance stated it was a false warning. After finishing paperwork and exiting the aircraft I went to observe as maintenance opened the cowl. The fire department stated they saw more heat on the thermal camera at the top near an area that was blackened with some type of dirt. At this point I double checked with maintenance and the fire department to see if they needed any additional information from us before we left.
After landing on RWY XX at ZZZ we vacated the runway and the PF (Pilot Flying) and PM completed their after-landing duties normally. Once the engines had reached their recommended cool-down time; engine #3 was shut down. This was to manage our brake temperatures in addition to our speed as ZZZ has a taxi speed limit. After taxiing for approximately 20 minutes we received a FIRE ENG 2 warning message. The PF brought the aircraft to a stop; the PM notified ground of an engine fire; and began running the associated FIRE ENG 2 electronic checklist. As soon as the PM notified ground of the engine fire they immediately let us know that fire services would be on their way. The checklist was run normally and the PM discharged bottle A into the #2 engine; however; the fire warning was not immediately extinguished. At this point in the checklist; we were directed to determine if an evacuation was needed or not. The PM asked ground if they saw any signs of fire from the #2 engine; both ground and a nearby aircraft reported seeing no signs of fire and it was decided at that point that evacuation was not needed. Shortly after this decision; the FIRE ENG 2 warning was extinguished and airport fire services arrived at the aircraft. In our communications with the fire services; they reported seeing no signs of fire other than smoke or possibly halon coming from the #2 engine tailpipe. After discussion with ground and the airport fire services we elected to restart the #3 engine and that the CA (Captain) would taxi us to parking. Dispatch; in addition to company ramp control; were notified as soon as practical of our situation to ensure a safe arrival at our parking stand. There were no further abnormalities.
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Source: NASA Aviation Safety Reporting System (public domain). Reports are voluntary submissions and are not verified by NASA.
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