general aviation

from The American Heritage® Dictionary of the English Language, 5th Edition.

• noun The operation of civilian aircraft for purposes other than commercial passenger transport, including personal, business, and instructional flying.
• noun The aircraft flown for these purposes.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun the section of the aviation industry that excludes both military and commercial passenger transport; for example sightseeing, pleasure flights, etc.