I also noted from the Flight Simulator that there seems to exist an NDB beacon at Montego Bay Airport. Is NDB commonly used today for commercial aircraft and what are the main purposes for it?
NDB (Non-directional Radio Beacon) is getting obsolete as an airfield navigational aid today because it suffers from many errors. Thunderstorms, rain, lightnings, locations, time of the day are some of the factors that affect its accuracy. It is classified as a non-precision radio aid. However, NDBs are sometimes still used as a marker at some Airports for crosschecking altitudes at certain position but rarely used as an airfield approach aid for commercial aircraft.
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