"L-39 Jet Trainer" and "Konotop Air Base scenery" for MS FS2000/ 2002/ CFS2 was Captain Sim's very first product released in 2001.

A model of the most popular military jet trainer in the world, the Aero L-39 'Albatross' was initially developed at the request of the Ukrainian Air Force.

- 5 stars and "Classic Flight Simulation Product" award. PC Pilot
- "The most realistic fighter jet add-on on the market." (Jeffrey Hendricks, CFS2)
- "The best add-on I have ever seen for FS2000" (Andrew Herd, Flightsim.com)