Hidden Air Bases are locations in Airforce Delta Storm that are not visible on the map immediately; They usually have unlock requirements associated with them, usually involving conquering the range near them repeatedly, sometimes under certain conditions. There are four hidden air bases in the game, two located in each chapter of the game.

Hidden Air Bases do not have missions to complete; all they have are aircraft to purchase. If you go to a hidden air base and then leave, the base will remain on the map afterwards, allowing you to easily go back there without having to repeat the unlock requirements, in case you don't have the money to purchase the planes.

Chapter One Air Bases

Sobel Air Base

Unlock Requirements

Go to the location noted on the map to the right. Conquer the range once. When you are conquering the range, you must shoot down all aircraft with machine guns. If ground targets are present, they must be destroyed with machine guns as well. Once you conquer the range, the base will appear on the map northwest of the range, and you can go there. This base is called "Sobell Air Base" in the PAL version of AFD Storm.

Aircraft

• A-4V Skyhawk Oval - 280,000 credits
• F-15S/MT Active - 400,000 credits
• Jian-Ji 10 - 310,000 credits

Horos Air Base

Unlock Requirements

You must be piloting the MiG-II Fishbed zwei. Go to the location on the map to the right. When you are conquering the range, you must shoot down all aircraft with machine guns. If ground targets are present, they must be destroyed with machine guns as well. Once you've conquered the range fulfilling these requirements, the air base will appear to the west of the range you've conquered.

Aircraft

• AV-8B Harrier II - 370,000 credits
• F-14G Hellcat II - 420,000 credits
• SeaHarrier - 340,000 credits

Chapter Two Air Bases

Melaina Air Base

Unlock Requirements

Go to the location on the map to the right. When you are conquering the range, you must shoot down all aircraft with machine guns. If ground targets are present, they must be destroyed with machine guns as well. Once you've conquered the range fulfilling these requirements, the airbase will appear to the east of the range you've conquered.

Aircraft

• F/A-18S AiraCobra II - 600,000 credits
• Yak-141 Freestyle - 430,000 credits
• A-JAX/2 Jerry Mouse - 1,000,000 credits, PAL ONLY

Gallos Air Base

You must be piloting the MiG-1.44 MFI. Go to the location on the map to the right. You must conquer the range twice in a row. When you are conquering the range, you must shoot down all aircraft with machine guns. If ground targets are present, they must be destroyed with machine guns as well. Once you've conquered the range twice while fulfilling these requirements, the air base will appear to the south west of the range you've conquered.

Aircraft

• XF-23CR Blackhollow - 520,000 credits
• XF-27 Pleiadus - 580,000 credits
• M.B.W.-189 Sun-Fish - 2,000,000 credits, PAL ONLY

Video Walkthroughs

NOTE - The PAL versions are shown. There is no difference in unlock requirements between the US and PAL versions; the PAL version is merely shown because they have the PAL exclusive planes.

Trivia

• The second air base in each chapter requires the first possible ace's plane to unlock (The MiG-II Fishbed zwei for the first chapter, and the MiG-1.44 MFI for the second chapter). Both of them are Mikoyan craft, as well.