Proving the truth could be hard though. You will find that witnesses disappear, because most people can't be bothered, and most won't put money or time where their mouth is. Also, with an aircraft, evidence of the truth may have been destroyed because you want to fly the thing, after all....
Very recently I nearly sued a builder over a bodge. He was a specialist conman, knowing exactly what people have to do to get him. I had to get a surveyor's report (£400) as the first step; my own photos of the bodge were almost worthless even though the report merely confirmed them. The penny dropped with him (that the country court would be next) when he got the report, but not 1 second before.
One has to be very careful...