What Is Minimum Fuel?

Fuel-management procedures are entwined into every aspect of flight, from planning to a periodic scan of the gauges while youre zipping along at cruise. But even the best-laid plans can easily fall victim to diversion, delays and even overly-optimistic thinking.

tkarmer

Wednesday, December 03, 2014 at 12:00 AM ET

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Key Takeaways:

Pilots can advise ATC of "minimum fuel," an advisory state indicating potential issues with undue delays but not guaranteeing priority, or declare "emergency fuel," a critical state requiring immediate priority handling due to dangerously low fuel.
"Minimum fuel" requires pilots to use judgment for declaration and alerts ATC to be mindful of potential delays, though controller response in granting priority may vary.
"Emergency fuel" is a definitive declaration that explicitly requires and will receive priority handling and full assistance from ATC due to a threat to flight safety.
Effective and timely communication of fuel status to ATC, whether "minimum fuel" or "emergency fuel," is crucial for flight safety and should not be delayed.

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Fuel-management procedures are entwined into every aspect of flight, from planning to a periodic scan of the gauges while you’re zipping along at cruise. But even the best-laid plans can easily fall victim to diversion, delays and even overly-optimistic thinking.

A pilot running short on fuel can advise ATC of two fuel different states: minimum fuel and emergency fuel. What few pilots understand is what those terms actually mean in the mind of a controller.