Its whatever the company needs at the time you are hired! We had a few guys in my class that had some pretty good sic turbine time and jet training in my Bro class (14 months ago). I had about 3800 hours when I was hired with about 1000 hours multi 135 time but no turbine experence. They will put you where they need you the most. If you have 121 experence......the jet is where you will probable go.....most of the time.