How to avoid venting fuel overboard? (Fuel Management)

Summary of Fuel System

The fuel is normally fed to the engine via the FUSE tank. This tank can be topped up by transferring fuel from any of the 3 types of AUX tanks (TIP, L.E and WING) via their associated fuel tank switches on the left hand side of the cockpit.

The fuel is transferred at an accelerated rate from the AUX tanks to the FUSE tank until it is full, and then the rate of transfer slows down to the rate of burn by the engine. Fuel DOES NOT start to vent simply when the FUSE tank is full. 

When does the fuel start to vent?

The fuel begins to vent overboard only when both these conditions are satisfied

• The FUSE tank is full; and
• All AUX tanks (TIP, L.E and WING) are turned ON at the same time.

This will be indicated by a FUEL VENT light on the main panel, just behind the control stick.

These points are also illustrated via the video below:

Thanks!