We actually haven't had much turnover at all. We have had one pilot replaced for cause and one just didn't fit in personality wise, but he was a good pilot. We have never been fully staffed is why you read lots of ads.
We have had more of a turnover in the maintenance area. Two mechanics were replaced for (due to the lack of a better term) incompetance, and one just got burned out from doing the other mechs work for them. I could still use one more wrench with ST experience.