Well, I should warn you that I got the union involved (Graphical Media and Print Workers Union GMPWU) for an incident related to the one I mentioned, when someone tried to get me another written warning by blaming something they did on me, I think they felt threatened by the fact that I was better at the job than them and wanted to, if not get me fired, then spike any chances of me moving up the food chain past them, and they saw that by building on the (rather unjust warning I had already received) they could make life hard for me. Unfortunately for that person, I refused to accept the written warning which was handed me and demanded a union hearing and the retraction of the warning (which, incidentally, put the sh*ts up the guy who had instigated the warning) I won the hearing, by providing evidence that proved it was not me responsible for the matter at hand, and I was told by the union rep who was in the hearing with me that it was the first time they had ever witnessed someone winning such a case.
But - and it is a big but - when something like that happens, it makes life hard for you in the work environment. It was a combination of this situation and the fact that I was pissed off with the lame journalistic integrity of the place that made me walk out of the job. So now all the writing I do is freelance. Since I believe you are an airline pilot, I suspect you may have not have many such a similar 'freelance options' and I would be aware that making yourself appear 'bolshy' (even if it is justified) can have repercussions as far as work opportunities go, so think carefully about what you do. I know that this is a problem with Easyjet pilots, who often get treated like crap and are afraid to complain lest they find themselves stacking shelves. Personally I didn't give a sh*t about that, as I was not going to put up with something so blatantly wrong and unjust, but then I knew I had other options. So think carefully about how far you push things. This might seem lame, but if you like what you do and you want to keep doing it, be aware of this possible pitfall, it's a bummer of course, but trust me, it's what can happen, anyone you 'defeat' at work in such a way will from that moment treat you as an enemy, and they will make life hard for you, just to be a b*st*rd.
Chock