Originally Posted by
Lasiorhinus
That Club SOP sounds like its not saying the same thing as the flight manual.
In the light piston singles I fly, I have fuel flow gauges, so I lean in the climb to the figures the flight manual says to lean to.
The "lean above 5000 ft" quote is from the POH of every Cessna fitted with a carburated engine.
EGT will always be more accurate then the fuel flow gauge especially the non electronic gauges which simply measure fuel pressure which is used to approximate fuel flow. These gauges will never be accurate enough to use as the sole source of information to lean.
A
properly calibrated electronic fuel flow gauge like the JPI one is much more accurate but I am willing to bet that there is not one single aircraft in the entire UK available for general training/hire that has one.