I didn't set out looking for a pilot's forum. I think I just typed ' Penair "Saab 2000" ' and this thread turns up on the 7th page of results, like this:
https://www.google.com/search?q=pena...w=1366&bih=635
My curiosity about the technical problem is just academic-- I wanted to get some insight into what the problem was. I work on machines for a living so this kind of thing is interesting to me...and I still haven't heard back from the airline.