Ahh I see. I believe I've fixed the issue.
What was happening was the aircraft was actually en-route, but it just wasn't showing en-route on the fleet page. So then when you started the quick flight, you essentially made the aircraft go on two routes at once.
What was happening was the system was not correctly updating the status of the aircraft as they went through the route. The first leg would be fine, but then on the second leg it would show the aircraft on the ground even though it was technically in the air.
As for duplicate flight numbers, I don't think that is solved yet... I'll have to keep testing it to see why it does that.
What was happening was the aircraft was actually en-route, but it just wasn't showing en-route on the fleet page. So then when you started the quick flight, you essentially made the aircraft go on two routes at once.
What was happening was the system was not correctly updating the status of the aircraft as they went through the route. The first leg would be fine, but then on the second leg it would show the aircraft on the ground even though it was technically in the air.
As for duplicate flight numbers, I don't think that is solved yet... I'll have to keep testing it to see why it does that.
I am the developer of Airline Enterprise