747 Fuel System Diagram
by jerome meriweather
   

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STAB Tank Pumps CTR Tank Pumps OVRD Pump Main Pump 4 Main Pump 3 Main Pump 2 Main Pump 1 Fuel X Feed Valve 4 Fuel X Feed Valve 3 Fuel X Feed Valve 2 Fuel X Feed Valve 1 Fuel Transfer Switch Fuel Transfer Switch Fuel Jeffison Nozzle Fuel Jeffison Nozzle Engine 4 Engine 3 Engine 2 Engine 1  
747 Photo and/or Graphic Element
  

 

 

Engine 1, 2, 3 & 4

Engines are monitor by the Primary ( Upper ) and Secondary ( Lower ) Engine Indicating & Crew Alerting System ( EICAS ).
Fuel Nozzle Valve

Controlled by the Fuel Jettison NOZZLE Switches located on the Engine Start & Fuel Jettison panel.
Fuel Transfer MAIN 1 & 4 Valve

Controlled by the Fuel Fuel XFER Main 1 & 4 Switch.
Fuel X Feed Valve 1, 2, 3 & 4

Controlled by the associated Fuel X Feed switch located on the Fuel panel.
Main Pumps 1, 2, 3 & 4

Controlled by the associated Main 1,2,3 or 4 switch located on the Fuel panel.
OverRide Main Pumps 1, 2, 3 & 4

Controlled by the associated OVRD Main 1,2,3 or 4 switch located on the Fuel panel.
Center Tank Pumps

Controlled by the associated L / R CTR switch located on the Fuel panel.
Center Tank Pumps

Controlled by the associated L / R STAB switch located on the Fuel panel.