Which of the following correctly describes the fuel that ensures the ability to reach an alternate airport?

• A. Final Reserve fuel
• B. FOB
• C. Alternate fuel
• D. Trip fuel

Answer: (C)

This question hinges on understanding how flight crews budget fuel for different scenarios. Alternate fuel is the amount of fuel you need to reach a designated alternate aerodrome if you can’t land at the destination. It’s the specific allowance that covers diverting to another airport and still having enough fuel to land safely. The other fuel categories mean different things: trip fuel is just enough to get to the destination, contingency fuel adds a cushion for unexpected conditions, final reserve fuel is a safety margin for a defined period (like holding or go-arounds), and fuel on board (FOB) is simply how much fuel is in the tanks at the moment. So the term that describes ensuring you can reach an alternate airport is alternate fuel.