Watch this first - a great overview of the sim and it's development.
This video review, by Aaron James Rogers, is one of the best video reviews of a combat flight sim I have watched! It is informative, well paced and covers all the major features of the sim.
Uploaded on Feb 27, 2012
A complete review of the A-10 air combat simulators by Parsoft Interactive. Featuring the A-10 Thunderbolt II (aka the Warthog), these mid-90's sims had a highly advanced physics model and offered hours of engrossing gameplay. Also includes historical background with gameplay footage of Hellcats Over the Pacific, SU-27 Flanker, F/A-18 Hornet, U.S. Navy Fighters, Fighter Squadron, and more.
Video by SiliconClassics.