What is the maximum endurance of the HH60?

• A. 2 hours
• B. 3 hours
• C. 4 hours
• D. 5 hours

Answer: (B)

Endurance is how long the helicopter can stay airborne on a given fuel load, including the required reserves. It depends on the aircraft’s fuel capacity and how much fuel it burns at typical operating power.

For the HH60 in its standard configuration with internal fuel and the required reserves, that endurance is about three hours. That’s the practical limit you can expect without adding external fuel tanks or in-flight refueling. So three hours is the best answer here. Longer durations would require additional fuel capacity not assumed in the standard setup, and shorter durations would mean using less fuel than the aircraft can carry.