When will the Boost Pumps automatically turn off after initial operation?

The boost pumps are designed to provide fuel pressure during engine start and for a short time afterward to ensure the engines receive the flow they need. The correct answer reflects that the boost pumps will automatically turn off after the engine has started successfully, as their primary function is to assist in maintaining fuel flow during the critical phases of engine start-up.

This automatic shutdown helps prevent unnecessary wear on the pumps and reduces the risk of overheating or failure from extended operation when not needed. Understanding the operational logic of boost pumps is crucial for ensuring proper fuel management and engine performance during flight procedures.

The other options relate to different operational parameters but do not align with the primary function and automatic shutdown sequence of the boost pumps in relation to engine start. For example, while a drop in fuel pressure or exceeding temperature limits could trigger various safety protocols, the boost pumps are explicitly programmed to deactivate once the engines are successfully running, underscoring the importance of knowing specific systems and their operational parameters in aviation.