Where should you confirm burn rate during fuel check?

• A. Top of climb
• B. Top of descent
• C. At one point enroute
• D. All of the above

Answer: (D)

Burn rate isn’t constant because engine load, weight, speed, altitude, and wind all affect how quickly fuel is consumed. When you perform a fuel check, you want the burn rate you’re using for calculations to reflect current conditions, not a value from a different phase of flight. That’s why it’s important to confirm burn rate at multiple points: at top of climb, during enroute cruise, and at top of descent. Each phase involves different power settings, aircraft weight, and aerodynamics, which can shift the actual fuel flow. Verifying the burn rate in all these phases keeps your remaining-fuel calculations accurate and safe, so you’re covered as the flight progresses.