Here is the full list of all 11 Air Missions: HIND trophies - there are 5 bronze, 5 silver and 1 gold.
Destroy at least 5 helicopters in Mi-8 helicopter battle (instant action)
Capture the city in central Asia (Campaign mode)
Play and complete at least one co-op mission
Shoot down 10 helicopters in deathmatch or team-deathmatch
Kill 100 ground soldiers in any mode
Destroy tank with AT-2 guided rocket
Shoot down a helicopter with an S-5 Rocket from a distance greater than 100 meters in singleplayer
Complete Instant Action - Clear The City during night
Evacuate the soldiers from the rooftop in Eastern Europe (Campaign mode)
Complete all Campaign missions
Complete all Instant action missions