Hi guys. Got a question please. I am currently runnin a fleet of ATR, A319 and B737NG. Anyway I am buying up aircrafts as money become available. Now what I want to ask is it worth having spare aircraft just to replace the aircraft like A319 and 737 when they go into D Check which takes like 1-2 months. Otherwise the routes will not be flown quite long especially if I plan to add LH aircrafts later which D check will be a lot longer. Or how do you guys do it?