Unlabeled Controls



It is a requirement that the engine controls are labeled as to their function and operation. In this case, labeling the blue knob “Prop—Push High RPM” and the red knob “Mixture—Push Rich” would be sufficient.

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Vic Syracuse
Vic is a fixed-wing and helicopter commercial pilot, CFII with ASMEL/ASES ratings, an A&P/IA, DAR, and EAA technical advisor and flight counselor. Passionately involved in aviation for over 40 years, he has built 11 aircraft and logged over 10,000 hours in 72 different kinds of aircraft. Vic volunteers as a Young Eagle pilot, has his own sport aviation business called Base Leg Aviation, and has written two books on aircraft prebuy and condition inspections.


  1. Wonderful! Although I am not yet a pilot I am a certified steam locomotive fireman. In hte average locomotive cab I have 22 valves to operate. I have to know what they supply steam or water to and when to open/close them. Very few are ever labeled; it would be nice if the FRA was as on top of the situation as the FAA is in the labeling aspect of things.
    Short but great article.


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