I believe it should. I believe that the consensus here is that you should scrap or sell your planes around the 3 year mark. I think it is even sooner for the really big planes. Maybe someone else can add to this?
I personally try to sell my planes around the 1.5-2 year mark because:
1) They start to appreciate in maintainence
2) I can still get back a decent amount of cash relative to what I paid for the plane
3) By that point, I might prefer to put a better plane on that route
3) They can still be useful to other new players

Gisa ^^