The Long Range Tanks are of the integral type, same as the main tanks. They are built into the wing structure through the existing bottom access openings. No skin removal, no extra access panels, or painting is required. Prefabricated aluminum parts are installed in the wing to contain the fuel in the cavity. The LR tanks feed directly into the main tanks by gravity, through interconnecting aluminum lines. There is no pilot intervention during the fuel transfer or fuel pumps to worry about. Transfer is continuous and can easily be checked on the ground at fill-up time.

There is a separate filler cap for each LR tank of the same type as the mains (none is required for the M20M or M20R). Also, there is a separate drain valve for each LR tank of the same type as the mains. There is no separate fuel gauge for the LR tanks. Fuel amount on the ground is determined by observing the fuel level in each LR tank and correlating it with the table provided in the flight manual supplement. In flight, the main tank fuel gauges will read full for the first two to three hours depending on the power setting. As a norm, the fuel onboard is greater than indicated by the gauges when the reading is above the mid scale. Below the mid scale, the LR tanks are empty and the fuel indicated is the true onboard fuel.

email@monroyaero.com