Freddie would have needed all his powers to stop from biting his perfectly manicured nails, keeping him occupied the whole time. After a group of passengers subdues the lunatic in question, Brian would say "well, obviously that's what I was about to do". Two weeks later he would say that he came up with the idea. Two months later he would be convinced he took down three armed hijackers single-handedly. After calm had returned, it would become clear that the 'pilot' running amok was actually a more-than-averagely intoxicated Roger Taylor who had attempted to shove the pilot aside and impress a flight attendant or two, or three, perhaps more.
Only later would the band realize that John Deacon had not even looked up once from his crossword in the entire length of the proceedings.
Not Plutus but Apollo rules Parnassus