I had this same problem. I would get to the hangar and all I could see was the hangar and two airplanes. The menu screen is at the bottom of the hangar screen. To see it you will have to go to; RISE OF FLIGHT folder, DATA Folder, and go all the way down in DATA folder until you see STARTUP CFG; This is where you will do a change. It will look like this

[KEY = graphics]
filter = 1
forest_quality = 1
full_height = 1024
full_width = 1280
fullscreen = 0
gamma_b = 1.000
gamma_g = 1.000
gamma_r = 1.000
Change the fullscreen value from 0 to 1. SAVE, AND that should fix the problem.