Enginesengine handling
Mixture Control
The mixture control is a cockpit control used to manually adjust the fuel-to-air ratio entering the engine cylinders to compensate for changing air density at different altitudes. Operating with an excessively rich or lean mixture can severely degrade engine performance and lead to issues such as spark plug fouling or overheating.
Key Points
- •The mixture control compensates for decreased air density at higher altitudes.
- •An excessively lean mixture can cause high engine temperatures and detonation.
- •Improper use, such as prolonged idling with a rich mixture, can foul spark plugs.
Exam Relevance
Pilots must know how and why to lean the mixture at altitude, and the dangers of improper mixture settings, including detonation.
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