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9 Cards in this Set

  • Front
  • Back

Inside each collector cell

2 boost pumps,

low level float switch,

quick drain outlet,

fuel capacitance probe,

level control valve,

sump drain

Number of fuel drains and where they are in the aircraft

Minimum 4 fuel drains, one in each collector cells and one in each transfer manifold

Vents in each fuel cell and why vent the cell

Two in each cell and to maintain a slight postive pressure in each cell to prevent collapse of the flexible tanks in case negative pressure existed.

Boostpump output and pressure

Nominal output of 450lbs/h @ a nominal pressure of 22 psi.

Secondary function of boostpumps

Transfer fuel from feeder cells to collector cell

Two advantages of collector cell design

1.changes in centre of gravity minimized because both in the center of the aircraft.

2. Possibility of uncovering the boost pump intake during turbulence or extreme nose up/down attitudes are minimized.

Location of fuel filter

Rear of the engine nacelle between the boostpump output and fuel flow transmitter.

When is the automatic change over system initiated

When the pressure @ #1 boostpump falls below 2 psi

Maximum number of boostpumps that should be running @ the same time