Which of the following items is classified as an engine-driven accessory?

The classification of engine-driven accessories refers to components that are directly powered by the engine's mechanical output and play a crucial role in the operation and control of the engine. The fuel control is recognized as an engine-driven accessory because it governs the fuel flow to the engine based on various operational parameters, ensuring optimal performance and efficiency. By managing the fuel-air mixture, the fuel control directly influences the engine's thrust and overall operation.

Engine-driven accessories are integral to the engine's functioning, as they rely on the mechanical energy generated by the engine itself, typically through gear or belt systems. In contrast, components such as a starter motor, while also essential, serve a different specific purpose—initially starting the engine. Electrical wiring does not qualify as an engine-driven accessory because it serves to connect and distribute electrical power rather than directly interact with the engine's mechanical functions. Likewise, a heater assembly typically operates independently of the engine's direct output and is not classified within the same category as the fuel control.