Cessna 172S Qref Book

after learning about how the engine works we remember that there are two things that are mixed together for combustion fuel and air let's learn some things about the fuel system the fuel system is designed to bring fuel from the fuel tanks to the engine and general aviation airplanes fuel systems can be broken down into two sub systems gravity fed systems and fuel pump systems high wing airplanes such as the Cessna 172 are normally designed to be gravity fed systems because the fuel tank is inside the wing which is located above the engine gravity can naturally pull the fuel from the tank to the engine although in normal operation a fuel pump is not required many high wing airplanes are still equipped with some sort of fuel pump either an engine driven electrically powered or both as a backup for emergency operations low wing airplanes such as the piper arrow a fuel pump is required to