How much additional fuel is available if manually filled to the base of the filler neck?

When manually filling the fuel tank to the base of the filler neck, it is important to understand the specific capacity that can be added beyond the standard operational fill level. In aviation and other contexts where fuel capacity is critical, the difference in fuel weight that can be added is significant for mission planning and range calculations.

In this scenario, if the answer indicates that an additional 100 pounds of fuel is available when filled to the base of the filler neck, this suggests that this specific volume represents the maximum safe and effective additional fuel load that can be accommodated without risking spillage or unsafe overfilling. This figure is based on common weight-to-volume conversions for aviation fuels, where fuel density is taken into account.

Calculating potential additional fuel loads helps in understanding fuel management, operational range, and overall efficiency of the flight. Therefore, the choice indicating 100 pounds as the additional fuel aligns with these practical considerations for safe operation and fuel management protocols.