3 votes

What are the reasons for this radial piston engine shut down procedure?

No Sir, radials do not get run at 1950 RPM before shutdown. That is a higher power setting than a good runup. But it is true that the idle RPM is brought up to around 1000 RPM for a while and the ...
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2 votes

What are the reasons for this radial piston engine shut down procedure?

It could also be to remove lead deposits from the spark plugs. Some avgas has an agent added to remove lead deposits, this only works above a certain temperature which is achieved above a certain RPM. ...
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  • 1,428
2 votes

Purpose of CHT drop in piston engine shutdown procedures?

According to this document, this is to allow the engine to cool and level the oil temperature: CHT Drop- Wait two minutes or until you can clearly see the H on Cyl Hd Temp. This is to allow the ...
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