Max Speed : 2500 km/h
Cruising speed:1000-1500 km/h
stall speed: 100-300 km/h
Controls: AG1+VTOL down to close cockpit and nose.

BACKSTORY
On 2005, the Korama Republic Air Force seeks the possibility of a multirole fighter. Thus,a competition began to create the best multirole fighter began.
The joining manufacturer is:
Twin Yield Corp. With the X-9
Kara Corporation. With XK-81
And Athena Aerospace. With XF-D.12
After a few tests, the test pilots are satisfied with the XK-81's characteristics.
Then the F-31 was born...
Using the newest Mk.11 AESA and 25mm gattling cannon, this aircraft is unofficially designated as the "Silver Crow" by our pilots.

Enjoy.