Most shares are great, professionally run and good experience.
Is there any way to protect youself from this? I'm thinking of buying a share, but don't want to buy in and a week later the engine to go bang and get a £15,000 bill which I have to fork out 25% of.....
As to the above quote, how would you avoid the bill if you bought the whole plane.
The great thing is that you only have to pay 25% of the bill not all of it which is why the group model works so well. Remember also the limit of your liability is the cost of the share. If it costs more than that to fix you can always walk.
Caveat emptor, do not pay into a share what you cannot afford to lose.