Oleg, SOW engine abuse by pilot?

[Tempest123]

I'm sorry mate but "we" who? You really switch off your propeller plane by cutting the mixture? That is one helluva dangerous game man.. If I did something like this with my instructor would have kicked my ar$e, you switch off the engine by bringing the engine to idle and cutting both magnetos off, that is like the first thing they teach you..



Most piston planes I've been in involve shutting off the engine by setting the mixture it to idle/cut off, thats why it's called "cut off". The idea is that you starve the engine of fuel, so that you are not left with unburned fuel in the cylinders or manifold. After the engine is off, the mag switch and battery master switch goes to OFF and your safe.

[WTE_Galway]

I have mainly flown 172s and 152s but the shutdown/parking checklist was generally something like:


mixture to the idle cut-off position.
fuel selector valve to the "off" position
turn off the master switch
turn off and remove key


A random google turned up this 172 POH in pdf format:

http://www.redskyventures.org/doc/ce...o7-scanned.pdf

It has no standard shutdown checklist but the shutdown due to engine fire in flight emergency procedure starts with mixture to idle cutoff.

The "securing aircraft" checklist does mention electrical first but by that stage the engine has been shutdown.

Originally Posted by Tempest123

I'm sorry mate but "we" who? You really switch off your propeller plane by cutting the mixture? That is one helluva dangerous game man.. If I did something like this with my instructor would have kicked my ar$e, you switch off the engine by bringing the engine to idle and cutting both magnetos off, that is like the first thing they teach you..



Most piston planes I've been in involve shutting off the engine by setting the mixture it to idle/cut off, thats why it's called "cut off". The idea is that you starve the engine of fuel, so that you are not left with unburned fuel in the cylinders or manifold. After the engine is off, the mag switch and battery master switch goes to OFF and your safe.

I am NOT saying you don't take the throttle to idle/cutoff first, I'm saying that an engine isn't considered OFF and safe until magnetos are OFF. Thinking that an engine is off without magnetos off is a common misconception.