21-08. FUEL SYSTEM
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1. During fuelling the automatic fuelling shut off valves will switch off the fuel supply system when:
2. Unusable fuel is:
3. Fuel is pressurized to:
4. (Refer to figure 021-27) If the centre tank is empty and there is more fuel in the left hand tank than the right is it possible to balance the fuel in the wing tanks in flight?

5. A volumetric top-off unit (VTO), is provided in a fuel system to: