If an aircraft weighs 3,400 lb at a 6,000 ft airport pressure altitude, how much fuel does it need?

To determine the amount of fuel needed for an aircraft at a specific weight and pressure altitude, it's essential to refer to the aircraft's performance charts, which provide fuel consumption rates based on the aircraft's weight and the conditions in which it's operating.

In this scenario, an aircraft with a weight of 3,400 lb at a 6,000 ft pressure altitude will consume a calculated amount of fuel within a certain timeframe. The amount provided in option B, 43 pounds, falls within the expected range based on typical performance data for this aircraft configuration at that weight and altitude. At higher elevations, the air density decreases, which can lead to increased fuel consumption due to less efficient engine performance.

Given this context, option B is correct as it aligns with expected fuel consumption rates for the specified weight and altitude. It reflects a calculated requirement that balances the aircraft's performance needs with the existing atmospheric conditions, assisting in satisfying the operational demands safely and efficiently.

Understanding how to read and interpret performance data is crucial in the field of aviation to ensure that pilots can make informed decisions regarding fuel requirements based on various flight conditions.