I remember flying across the North Sea late one evening at the end of a long week in the good 'ol Scud (737-200). I was particularly tired/bored so after gazing into space for a bit I transferred my attention to the instrument panel.
Those who are familiar with this type will recall that the ADI had a little push button next to it that fed a fixed displacement signal into the horizon so you could check it before you took off - it was something like 10degs down 15degs right (can't remember exactly). We had been flying S&L for about half an hour and something possessed me in my dream-state to 'test' the ADI with the button.
Unfortunately, the autopilot was in and slaved to my side, so on activating the test, the aircraft immediately tried to take up the attitude displayed, which woke me up pretty quickly (and everyone else onboard
). No injuries, so I got away with it...
