Many owners assume that when an aircraft completes its annual inspection, it has been thoroughly scrutinized by well-trained eyes and can be depended upon to be in condition for safe flight. Mechanics know better. The first flight after maintenance is the most likely time for something to go wrong. Mike Busch, A&P/IA, offers advice on what you should do before and during the first flight after an annual or other major maintenance in this forum that was originally presented during Spirit of Aviation Week.