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Communications: Difference between revisions
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→CTAF, UNICOM, and MF
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Note that many airports have control towers that are not open 24/7. When the control tower is closed, the tower frequency will typically become a CTAF, and pilots do their own position reporting, as at any uncontrolled field. | Note that many airports have control towers that are not open 24/7. When the control tower is closed, the tower frequency will typically become a CTAF, and pilots do their own position reporting, as at any uncontrolled field. | ||
In Canada and some other countries, when talking over the CTAF/ATS is required, it is referred to as the MF (''Mandatory Frequency''), and will often be monitored by a flight-services specialist. The MF is typically for limited hours, and outside of those, it also becomes a CTAF. If there is an FSS specialist monitoring the MF, then the pilot will address calls to "Radio" (e.g. "Kingston Radio, Cherokee | In Canada and some other countries, when talking over the CTAF/ATS is required, it is referred to as the MF (''Mandatory Frequency''), and will often be monitored by a flight-services specialist. The MF is typically for limited hours, and outside of those, it also becomes a CTAF. If there is an FSS specialist monitoring the MF, then the pilot will address calls to "Radio" (e.g. "Kingston Radio, Cherokee FBJO turning left base 19."); otherwise, the pilot will address them to "Traffic", as with the CTAF. | ||
Even without an MF, it is generally recommended that pilots of aircraft having radio equipment permitting two-way communications should contact the Airport UNICOM to obtain advisory information, and announce their intentions over the CTAF when within ten (10) miles of the Airport. Pilots are also encouraged to maintain a listening watch on the frequency when operating within a ten mile radius of the Airport. All departing aircraft shall announce on the CTAF their intention and runway to be used for departure. | Even without an MF, it is generally recommended that pilots of aircraft having radio equipment permitting two-way communications should contact the Airport UNICOM to obtain advisory information, and announce their intentions over the CTAF when within ten (10) miles of the Airport. Pilots are also encouraged to maintain a listening watch on the frequency when operating within a ten mile radius of the Airport. All departing aircraft shall announce on the CTAF their intention and runway to be used for departure. | ||