Question: what is the difference between class g and class e airspace?
Answer: Class E is used for airspace between usually 2,500 ft (760 m) AGL (around airports 1,000 ft (300 m) or 1,700 ft (520 m) AGL) and FL 100. Class F is not used. Class G is used below 2,500 ft (760 m) AGL (around airports below 1,000 ft (300 m) AGL, then rises via a step at 1,700 ft (520 m) to 2,500 ft (760 m) AGL).