Here are the briefs for the respective airplanes:
The MiG-31
- Must be compatible with FSX Acceleration.
- Must feature a realistic panel and VC.
- Must have an authentic autopilot and radio system.
- Must have realistic flight dynamics.
- If at all possible, include 33 BLUE in Soviet Anti-Air Defence Forces (PVO).
The Su-15TM
- Must be compatible with FSX Acceleration.
- Must feature a realistic panel and VC.
- Must have an authentic autopilot and radio system.
- Must have realistic flight dynamics.
- If at all possible, include 75 BLUE in Soviet Anti-Air Defence Forces (PVO).