What's the deal with Qusahwira airbase?

[Capn kamikaze]

It's there in the map, but it's not available as somewhere to use, you can land there, but can't set off from there?

[draconus]

You can start from anywhere on land using "start from ground" option.

[GeoS72]

Consider it a blank canvas for establishing a base of operations. You could add hidden FARPs, mobile TACAN, & supply units to resupply aircraft. It could also serve as an insurgent base to harass the surrounding airfields. The options are endless!