So it seems like this map only includes Class B (SFO) & C (OAK) airports. I get that the smaller class D's (HWD, PAO, SQL) are much more numerous and don't hav

So it seems like this map only includes Class B (SFO) & C (OAK) airports. I get that the smaller class D's (HWD, PAO, SQL) are much more numerous and don't have the same restrictions. BUT, flying your little Phantom near one of those small airports could still cause a major catastrophe. Try to be 5 miles from any active airport and always under 500' AGL.