Originally Posted by
abelenky
The Engine Shutdown procedure for most small piston planes involves pulling the Mixture to Cutoff while the Throttle is at Idle.
Isn't that effectively the same as running the plane out of gas?
No.
When you're drinking something out of a cup with a straw ...
You stop sucking -- deliberately shutting off the flow of liquid, quickly, silently.
You reach the end of the drink, and your continued sucking of liquid and air causes an irregular flow and a distinctive sound.
In both cases the flow stops, but the causes and the sounds are different.
.