Auxiliary Fuel Tanks (If Installed); Operation - Diamond DA 62 Flight Manual

Airplane Description DA 62 AFM

Auxiliary Fuel Tanks (if installed)

The auxiliary tanks are optional equipment (OÄM 62-001).
Description
The auxiliary fuel tanks are installed in the rear section of the engine nacelles, above
the wing main spars. Each auxiliary fuel tank has a filler cap located on the top surface
of the nacelle. The additional fuel capacity is 18.5 US gallons (70 liters) per side. The
total fuel capacity (main fuel tanks and auxiliary fuel tanks) is 44.5 US gallons (168.4 liters)
per side.
The fuel supply connection attaches to a finger filter mounted at the rear of the auxiliary
fuel tank. Each auxiliary fuel tank has a auxiliary pump which transfers fuel into the related
main fuel tank.
The vent line for the auxiliary fuel tank has a check valve with capillary. It allows air to
enter the tank, but prevents flow of fuel to the outside. The capillary equalizes the air
pressure during climb. A fuel drain valve is located at the rear of each auxiliary tank.

Operation

Two AUX PUMP switches in the cockpit are used to activate the auxiliary pumps. The
switches are located behind the elevator trim wheel on the center console. Both switches
are intended to be used simultaneously to prevent the airplane from additional lateral
imbalance. The auxiliary pump transfers the fuel from the auxiliary fuel tank into the related
main fuel tank. The fuel level switch shuts off this pump automatically when the auxiliary
fuel tank is empty or when the main fuel tank is full. During operation of the pumps an
advisory alert on the Garmin G1000 indicates that the fuel transfer is in progress.
If the auxiliary fuel tank is empty, a caution alert appears on the Garmin G1000. In this
case, the auxiliary pumps must be switched OFF.
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