What provides information to the fuel system computer?

• A. Fuel system and AHRS
• B. Engine oil pressure and cabin temperature
• C. Boost pump and hydraulic pressure
• D. Electrical power supply and GPS

Answer: (A)

The fuel system computer relies on inputs from two kinds of sources: data from the fuel system itself and attitude data from the AHRS. Fuel-system sensors provide measurements like fuel pressure, quantity, and flow, which the computer uses to meter fuel, monitor for anomalies, and manage things like crossfeed and tank balancing. AHRS supplies the aircraft’s attitude information (orientation in space), which helps the system account for changes in fuel behavior due to tilt or bank during flight, ensuring reliable fuel distribution and pump operation.

Data from engine oil pressure, cabin temperature, hydraulic pressure, boost pumps, electrical power, or GPS aren’t directly used by the fuel system computer for regulating fuel flow, so they don’t fit as inputs to this control logic.