General Aviation is a rich man's toy. 25 percent of all general aviation operation are for instruction and training purposes. Total aircraft noise emission is increasing. The reduction of noise level is by far greater than the increase of frequency. General aviation noise has been reduced by 'only' about 10 dB during the same period, but the number of flights is stagnating, even declining.
Airports bury the country under concrete.
Up to 75 percent of an airport area is green with an exceptionally varied flora and fauna. Some say 11, the eleventh being pilots . . . Every month, hundreds of general aviation aircraft share the airspace over the North Atlantic with thousands of airliners. Granted, most of these GA aircraft are turbojet-powered corporate aircraft, yet many of those who operate them are AOPA members. All of this has required the input of many types of operators, not just the airlines.