I don't have a "both" on my Mooney and I DO NOT miss it. "Both" just
means that if you ever run out of gas, you're really out of gas. The
Cessna 140 I used to fly would drain all the gas from the left before
touching the gas in the right (its not the same as the C-150, there is
no interconnecting hose in the 140).


-Robert



(Koopas Ly) wrote in message . com...
Good day all,

With regards to fuel tanks in a C172, why does the takeoff and landing
checklists both call for the fuel selector handle to be in the "both
tanks" position?

The only time that fuel is set to one particular tank is on the
ground. I've never used fuel from only one tank in flight. Why would
someone do that?

Also, why is the fuel selector set to one tank during refueling? Is
it to minimize crossfeeding?

Thanks,
Alex