What component should be checked before performing an engine start?

Before performing an engine start, it's essential to check multiple components to ensure a safe and efficient start. Each of the components listed plays a crucial role in the operation of the aircraft's engine.

Fuel levels are vital because an insufficient supply of fuel can lead to engine failure shortly after starting, while too much fuel can cause flooding, preventing the engine from starting. Ensuring that there is adequate fuel available is a fundamental pre-start procedure.

Propeller pitch is also important. A correct propeller pitch setting is necessary for proper engine operation. If the pitch is incorrectly set, it could lead to performance issues during start-up and can affect the aircraft's ability to take off and climb efficiently.

Electrical systems must be checked as well because they power essential functions, including the ignition system and any electronic components required for engine start. Faulty electrical systems can prevent the engine from starting or lead to unexpected behavior once it is running.

Given these factors, the most comprehensive approach is to check all components—fuel levels, propeller pitch, and electrical systems—prior to engine start. This ensures that everything is in order and that the aircraft is ready for a safe operation, which is why "all of the above" is the correct choice. This holistic check reduces the risk