Navion Fuel Systems

The J.L. Osborne tip tanks, originally sold under the "Brittain" name, were offered for Navions as well as Bonanzas. The Navion's unique factory fuel system had two 20-gallon wing tanks filled by a single port, with an optional aft-fuselage tank holding an extra 20 gallons. Without the rear tank option, the addition of 20 gallons per side with the Osborne tip tanks gave a very desirable increase in range. In addition, a 250-pound gross weight increase was part of the Osborne tanks' approval for the older Navions. A total 108-gallon supply, including tip tanks, was available in the final Navion Rangemaster model.