FSAirlines

Hello!
I have a big Problem. I make an new Flight. Then when i go to: Book Flight is not a Flight aviable. I'm on the correct Airport and and and

Please help me
THANK YOU

Are you typerated for the aircraft?

Is the Aircraft busy otherwise?

Is the route enabled to fly that aircraft?

Are you allowed to book flights with an aircraft from that fleet?

Thank you for your help!
The problem is cleared
Thank you very much!