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Formula To Calculate Fuel/time?  
User currently offlineOmegous From United States of America, joined Nov 2001, 293 posts, RR: 2
Posted (13 years 3 months 3 weeks 1 day 21 hours ago) and read 5943 times:

Is there an easy way to calculate how much flying time you have left by knowing the gallons in the tank? This is mainly foir GA flying.

Like if I look at my fuel indicator and it shows 40 gallons, is there an easy way? Is there an easy way to calculate it when flying? Recalculating seems kinda difficult sometimes.

Just any tips would be appreciated!

1 replies: All unread, jump to last
User currently offlineScootertrash From United States of America, joined Aug 2001, 569 posts, RR: 8
Reply 1, posted (13 years 3 months 3 weeks 1 day 20 hours ago) and read 5927 times:

The first problem is that you are judging the amount of gas left in your tanks using the gauges. As I am sure you are aware, GA airplane fuel quantity indicators are notoriously inaccurate.

The way I always did it was to figure out my endurance before I ever left the ground, allowing for taxi, climb, cruise and descent. I started my time at the beginning of my takeoff role and watched the time carefully throughout the flight. I kept an eye on the gauges as well, careful to note any possible extra fuel consumption.

Thinking of gas as minutes in your tanks as opposed to gallons may clear up any situational awareness problems that you may have. Don't for get to lean the engine per the instructions in the POH.

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