galleypower
I don't know how the following incident happened but it did.
Years ago a Mohawk was having some work done in the hangar at Bundy (YBUD), preparatory to a charter flight the next day. Engineers crawling about the outside and some in the flight deck.
One engineer was lying on his back on the F/O's seat, wedged under the instrument panel doing whatever. When he pulled himself out he knocked the undercarriage lever, which some how sprang to the up position and the U/C retracted leaveing one 7 or 8 tonne aircraft sitting on it's guts in the hangar floor.
The squat switches should have prevented the retraction but didn't.