What is the Hot Spare fuel in pounds?

• A. 3200 lbs
• B. 5400 lbs
• C. 4200 lbs
• D. 6000 lbs

Answer: (B)

Hot spare fuel is the extra cushion of fuel carried beyond the planned trip fuel and the standard reserves to absorb unexpected delays, weather detours, or rerouting after takeoff. It’s the last buffer that lets you continue safely if you encounter holding, deviations, or a diversion while still meeting final reserve requirements.

In this Longitude 700 scenario, the standard cushion defined for hot spare fuel is 5400 pounds. That amount provides a realistic buffer for unplanned contingencies without overloading the aircraft or eating into payload. The other numbers would either not provide enough of a cushion to handle typical diversions or would exceed the mission’s weight constraints, so 5400 pounds is the best fit for the hot spare in this case.