What is the most common Ctaf frequency?

CTAF Frequencies The Common Traffic Advisory Frequency (CTAF) or Unicom frequencies are typically used at nontowered airports. The most common are 122.7, 122.8, 122.9, 123.0. 123.050 MHz with 122.950 being the usual CTAF frequency of choice for airports with a tower.



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It states that for each degree off (or displacement) over a distance of 60 nautical miles (NM), it will result in 1 NM off course.

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The NOTAM states that, 'all aircraft operating in the United States national airspace, if capable, shall maintain a listening watch on VHF guard 121.5 or UHF 243.0. ' The value of 121.5 is that someone is always listening—every ATC facility monitors it.

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