How does the Internal Fuel Transfer system normally work?

How does the Internal Fuel Transfer system normally work?

• A. Pumps in the #1 and #2 fuel tanks transfer fuel into the #2 and #3 fuel tanks while wing fuel tanks replenish the fuel in the #4 fuel tank.
• B. Pumps in the #3 and #4 tanks transfer fuel into the #1 tank.
• C. The system uses gravity feed from the wing tanks to the #2 tank.
• D. The system transfers fuel from wing tanks to the #2 tank only.

Answer: (A)

Internal Fuel Transfer is handled by pumps located in the ballast tanks themselves, moving fuel between tanks to keep weight balanced and ensure there is always a reliable fuel source for the engines. In typical operation, the forward tanks push fuel rearward into the middle tanks, so the middle and aft tanks stay properly loaded and ready to feed the engines as needed. At the same time, fuel from the wing tanks is used to top off the rear centerline tank, keeping that reserve replenished as fuel is consumed. This pump-driven transfer allows precise management of fuel distribution and center-of-gravity, rather than relying on gravity alone or feeding a single tank.

Internal Fuel Transfer is handled by pumps located in the ballast tanks themselves, moving fuel between tanks to keep weight balanced and ensure there is always a reliable fuel source for the engines. In typical operation, the forward tanks push fuel rearward into the middle tanks, so the middle and aft tanks stay properly loaded and ready to feed the engines as needed. At the same time, fuel from the wing tanks is used to top off the rear centerline tank, keeping that reserve replenished as fuel is consumed. This pump-driven transfer allows precise management of fuel distribution and center-of-gravity, rather than relying on gravity alone or feeding a single tank.