From OTM Games
PDF – Free

A hex-based miniatures ruleset for aerial combat. It emphasizes the importance of speed, altitude and pilot skill, and minimizes much of the tedium typically associated with air-to-air combat games. It includes statistics for many frontline fighters that saw action during the Korean War, and a pilot advancement system for campaign games.
The rules differ from MiG Alley, with streamlined initiative and combat systems.