I know that an aircraft will never be fueled completely for short hops.
But is it written in the user manual to use the wing tanks preferably or is it up to the Capt. to decide which tanks are used? What's the reason behind this?
The fuel pumps?
"The United States Federal Aviation Administration (FAA) has received reports
indicating that fuel pumps on Boeing Model 737, 747 and 757 series aeroplanes have
failed as a result of chafing of the stator lead wire bundle. This occurred when the
stationary wire bundle came into contact with the rotor in the pump motor. The
pumps failed when the pump power was short-circuited to the rotor and the circuit
protection device tripped.
The centre tank fuel pumps must be OFF for takeoff if centre tank fuel is less than 5,000 pounds (2,300
kilograms) with the airplane readied for initial taxi.
Both centre tank fuel pump switches must be selected OFF when centre tank fuel quantity reaches
approximately 1,000 pounds (500 kilograms) during climb and cruise or 3,000 pounds (1,400
kilograms) during descent and landing. The fuel pumps must be positioned OFF at the first indication
of fuel pump low pressure."
Any input is welcome!
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