OGDEN -- When a small, piston-powered aircraft gets a flat tire and blocks the sole runway at your rural airport, you can't exactly call the auto club. "Bottom line, your runway is closed," said Angie Johannsen, vice president of Redtail Aviation, which owns airports in Moab and Price. "Planes cannot land or take off. You need the damaged aircraft off the runway ASAP."But Cessnas and other small planes aren't tow-friendly, and trying to drag the aircraft to one side for repairs often results in destruction of the wheel system. The only other option is to fly in an airplane mechanic with tools for on-the-spot repairs, but that takes both money and time.