This 1979 Bellanca 17-30 Viking Is a Stealthily Quick ‘AircraftForSale’ Top Pick Its fabric covering might look old-fashioned, but the Viking is known for fast-paced flying.

This 1976 Bellanca 17-30A Viking Is a Speedy, Wood-Wing ‘AircraftForSale’ Top Pick A wooden structure and fabric covering make this aircraft unique among contemporary, fast four-seaters.

A study of the vibration characteristics of an engine-propeller installation involves (1) a determination of the vibration spectrum of the installation, that is, a determination of the frequencies of ...