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 two distinct fuel states: "minimum fuel" and "emergency fuel," each carrying different meanings and consequences for flight operations.
"Minimum fuel" is an advisory indicating a pilot cannot accept undue delays; it is not an emergency and does not guarantee traffic priority, though ATC will be alerted to potential issues and may offer assistance based on discretion.
"Emergency fuel" is a clear declaration of acute danger requiring immediate landing and priority handling from ATC, obligating the pilot to state "emergency fuel" and remaining fuel in minutes.
Pilots are urged to use their judgment and communicate their fuel status proactively to ATC, declaring minimum fuel if concerned and an emergency if the situation becomes critical to prevent a potentially fatal outcome.

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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.