I think it depends whether you are coming in completely cold or have some kind of background in aviation. I took a few days to clobber each one but then I'm a retired aircraft engineer. They're not hard, if you have an average amount of nounce then you will walk them. I found the nav exam the longest to do but it's probably the most involved one.
Last edited by thing; 11th May 2012 at 21:09.