DJI Innovations is introducing a firmware update to the Phantom 2 quadcopter “to increase flight safety and prevent accidental flights” in around 350 “No Fly Zones” world-wide.
The update downloads a global GPS database of restricted locations. If the Phantom has a sufficient GPS signal, it will not fly into the restricted area.
The airport list includes Category A for large international airports with a 5 mile safety zone. In the first 1.5 mile radius, you will be unable to take off. From 1.5 miles to 5 miles from the airport, there is an increasing height limitation – 35 feet at 1.5 miles to 400 feet at 5 miles.
Category B features a 0.6 mile safety zone radius, and is intended for smaller airports. Inside that zone, you will be unable to take off.
If you approach a safety zone from outside the radius, you receive a warning. If you accidentally fly into a safety zone, and then your Phantom acquires a GPS signal the Phantom lands immediately inside the no-takeoff area, and descends to the specified maximum height in the height-restricted area.
Also see : http://www.ThirtyThousandFeet.com for details.