The Flap Drive Power Unit is located in the center wing equipment bay along with which other components?

• A. Motors
• B. Hydraulic Pumps
• C. Navigation Lights
• D. Fuel Pumps

Answer: (A)

The flap actuation system is designed so the power source and the moving components that actually drive the flaps are grouped together. The Flap Drive Power Unit provides the hydraulic power, and the flap drive motors are the devices that convert that power into the motion that moves the flaps. Placing the FDPU in the center wing equipment bay alongside the flap drive motors minimizes the length of hydraulic lines and drive hardware, simplifies cooling and maintenance, and ensures the system operates smoothly and responsively. The other items listed aren’t part of the flap actuation assembly and aren’t located in that bay for this function.