Skyfarer founder and CEO Nick Tsang in the cockpit of a Gulfstream G650. (Photo courtesy of Nick Tsang) When a pilot wants to find a flight instructor, a mechanic, an examiner for a flight test, or a fair price on an airplane, the solution is usually the same: ask around at the airport. Nick Tsang, founder and CEO of Skyfarer, wants to help fix this problem. He sees general aviation as a multibillion-dollar market that’s fragmented at every stag…