Navigational Aids (NAVAIDs)
Navigational Aids (NAVAIDs) are physical devices on the ground that aircraft can detect and fly to. There are many different kinds of NAVAIDs, such as Very High Frequency (VHF) Omnidirectional Range / Distance Measuring Equipment (VOR/DME) and the Instrument Landing System (ILS), which is made up of the Glideslope (GS) and the Localizer (LOC). VOR facilities allow the pilot to follow a designated flight path by using the aircraft's cockpit gauges to indicate their positions. ILS transmits guidance beams to allow the pilot to land safely and efficiently.
- The navigation instruments indicate the position of the aircraft in relation to a selected navigation facility or fix.
- Provide Pilotage information such as a predetermined path along a route
- Provide vertical slope guidance towards runway landing
- Provide horizontal slope guidance for aligning an aircraft to the center of the runway
- Provide pilotage information so the aircraft can be maneuvered to keep it on a predetermined path
- Allow aircraft to descend to the runway at the most optimal angle
- Allow aircraft to align with the center of the airport's runway during landing