What is the correct sequence of steps in the Fuel Crossfeed Process?

The correct sequence in the Fuel Crossfeed Process is significant for ensuring proper fuel management during flight operations. Selecting the supplier side and having the boost pump operate ensures that fuel is adequately supplied to the engine, which is essential for maintaining engine performance and reliability. When the crossfeed valve opens, it allows fuel to flow from the selected tank to the operational side, ensuring balance and fuel efficiency.

Starting with the selection of the supplier side guarantees that the correct fuel source is being used, followed by the activation of the boost pump, which increases the fuel pressure necessary for proper atomization and combustion within the engine. Opening the crossfeed valve afterward enables the transfer of fuel from the selected side to power the engine, completing the process in a logical and safe manner.

In contrast, other options may suggest steps that are not aligned with safe operational protocols or that could lead to improper functioning of the fuel system. For example, turning off the jet pump or setting switches to auto without ensuring proper operation of pumps could lead to fuel starvation or imbalances, which can threaten the safety of the flight.