Editing Avionics (section)

===Navigation===

{{Main|Air navigation}}
[[Air navigation]] is the determination of position and direction on or above the surface of the Earth. Avionics can use [[satellite navigation]] systems (such as [[GPS]] and [[WAAS]]), [[inertial navigation system]] (INS), ground-based [[radio navigation]] systems (such as [[VHF omnidirectional range|VOR]] or [[LORAN]]), or any combination thereof. Some navigation systems such as GPS calculate the position automatically and display it to the flight crew on moving map displays. Older ground-based Navigation systems such as VOR or LORAN requires a pilot or navigator to plot the intersection of signals on a paper map to determine an aircraft's location; modern systems calculate the position automatically and display it to the flight crew on moving map displays.