What is the function of the APU Load Control Valve (LCV)?

What is the function of the APU Load Control Valve (LCV)?

• A. Regulates the flow of air from the APU.
• B. Regulates fuel flow to the engines.
• C. Controls exhaust temperature.
• D. Opens the APU bay.

Answer: (A)

The function being tested is how bleed air flow from the APU is managed. The APU Load Control Valve meters the air the APU delivers to the aircraft’s pneumatic/air conditioning system, keeping the bleed air pressure at the level the systems require and preventing the APU from being overloaded. When the packs and other bleed-demand sources need more air, the valve opens to allow more flow; when demand drops, it closes to reduce the APU load. This is not about fuel flow, exhaust temperature, or opening the APU bay.

The function being tested is how bleed air flow from the APU is managed. The APU Load Control Valve meters the air the APU delivers to the aircraft’s pneumatic/air conditioning system, keeping the bleed air pressure at the level the systems require and preventing the APU from being overloaded. When the packs and other bleed-demand sources need more air, the valve opens to allow more flow; when demand drops, it closes to reduce the APU load. This is not about fuel flow, exhaust temperature, or opening the APU bay.