Club Homepage Forums Classified Ads Buy & Sell - Everything But Airplanes Not the way to buy an airplane

My A&P has this airplane. A prospective buyer came in wanting to test fly it. They went for a test flight, came back after a while. There were a few planes waiting to take off. The plane made a normal landing. Next thing, ATC directed all the holding airplanes to taxi back due to "aircraft down on runway". Turned out, the buyer retracted the gear instead of the flaps. I guess he's committed to buying that plane now.

P.S. Can't they make a safety switch so that gear can't be retracted on the ground?