I was once told the jet (a B-1) was "crew-ready" and when we went out to the jet, it was missing an engine! It was the same tail number they had on the schedule for us to fly.
There was another time I was moving my ejection seat forward during the preflight and about half-way up, it started to shake and make grinding sounds. It hung up doing that for a second or two and then continued forward. I was told that was normal (which it's not). But then again, I was dumb enough to take it as it was...
On the other hand, I've seen some dumb things operators do (or don't do) to MX. For example, I use to take the defensive systems and offensive systems maintainers into the sim so that they could see the equipment they worked on actually on and in use. Some of them had worked on the equipment for ten plus years and had never seen it work except in ground tests. That's unsat! I couldn't believe it never occured to any operators to get them into the sim for at least a little bit of a look at how the stuff looks and works in flight. I made a DVD of the radar screen during a low level and most of the radar MX troops had never seen it working like that and loved the DVD.
PBAR
ex-Bone WSO