Here is the full list of all 16 Flight Control HD achievements. It takes around 5-6 hours to unlock all of the achievements on Windows.
Land 5 helicopters in a row on the Windy airfield
Land 50 aircraft without flying through any gates on the Stunt airfield
Open all umbrellas simultaneously on the Stunt airfield
Fly a stunt aircraft through all gates and land safely on the Stunt airfield
Play 200 games in total
Land 200 aircraft in a game
Land 3 aircraft at the same time
Land an aircraft on each airfield
Land no aircraft for 3 minutes
Keep the same aircraft in the sky for 3 minutes
Reach 100 "Total Aircraft Landed"
Land 3 helicopters in a row
Reach 20 "Most Aircraft on Screen"
Land 5 aircraft within 10 seconds
Land 10 jets in a game
Read the game tutorial