The electrical boost pump is primarily used for what purpose?

The primary purpose of the electrical boost pump is to facilitate initial engine start. When starting the engine, it helps ensure that fuel is quickly delivered to the engine's fuel system under the necessary pressure. This is particularly important because the system may require a sufficient amount of fuel to initiate combustion efficiently. The boost pump primes the engine by supplying fuel from the tank to the fuel lines, preventing issues like vapor lock and ensuring that the engine has an adequate fuel supply right from the start.

In contrast, while fuel management, filtration, and system pressure regulation are essential components of the overall fuel system in the T-6B, they are not the primary functions associated with the electrical boost pump during the engine's starting cycle. Fuel management typically refers to overseeing fuel consumption and allocation during flight, fuel filtration ensures that debris does not enter the engine, and pressure regulation maintains the correct fuel pressure during operation after the engine has started. The boost pump's critical role occurs before the engine is running, making the correct answer focused specifically on its function during the initial start phase.