Originally Posted by
vilas
Fire button pushed by mistake is not a good enough reason to undo it. Unless a failed engine was shut and wrong engine was secured. As long as you have one engine available its safer to just land back rather than try to undo it and realize that was another mistake.
Very hypothetical obviously:
Halfway between EWR and SJU. GEN 1 MELd, so APU running. APU fire followed by inadvertent ENG2 fire push button activation. Realize mistake, and push APU fire push button. Would you not try to undo ENG2 fire push button?