the Florida Keys Marathon International (KMTH) radio calls

Non-towered airport: self-announce on the CTAF

Sample calls at KMTH

the Florida Keys Marathon International has no operating control tower. Every call below goes out on the CTAF, 122.975, to the other aircraft, not to a controller. The runway shown is 07; use whichever runway the wind and the traffic dictate on the day.

The aircraft is the AIM’s own example, Cessna Three One Six Zero Foxtrot; the squawk codes, altitudes and headings are illustrative. Frequencies, station names and runway numbers are this airport’s, from the FAA data.

1. Tune 122.975. Nobody clears you; you announce and you listen. The airport name goes at the start and the end of every call, and the runway is always a number, never "the active" (AIM 4-1-9 g 8).
2. Youthe Florida Keys Marathon International traffic, Cessna Three One Six Zero Foxtrot, taxiing to runway zero seven, the Florida Keys Marathon International.
3. Youthe Florida Keys Marathon International traffic, Cessna Six Zero Foxtrot, departing runway zero seven, departing the pattern to the north, the Florida Keys Marathon International.
4. Announce until you are about 10 miles out; on the way back, start announcing at 10 miles (AIM 4-1-9 c 1, TBL 4-1-1).
5. Youthe Florida Keys Marathon International traffic, Cessna Three One Six Zero Foxtrot, one zero miles south, two thousand five hundred, landing the Florida Keys Marathon International, the Florida Keys Marathon International.
6. Youthe Florida Keys Marathon International UNICOM, Cessna Six Zero Foxtrot, one zero miles south, request wind and runway information, the Florida Keys Marathon International.
7. A UNICOM operator, if one is on, answers with the wind and the runway in use (AIM 4-1-9 h). If nobody answers, choose the runway from the wind and the pattern traffic you can hear.
8. Youthe Florida Keys Marathon International traffic, Cessna Six Zero Foxtrot, entering left downwind runway zero seven, full stop, the Florida Keys Marathon International.
9. Youthe Florida Keys Marathon International traffic, Cessna Six Zero Foxtrot, left base runway zero seven, the Florida Keys Marathon International.
10. Youthe Florida Keys Marathon International traffic, Cessna Six Zero Foxtrot, final runway zero seven, full stop, the Florida Keys Marathon International.
11. Youthe Florida Keys Marathon International traffic, Cessna Six Zero Foxtrot, clear of runway zero seven, the Florida Keys Marathon International.

If things change. Do not use "any traffic in the area, please advise"; the AIM says it is not to be used under any condition (AIM 4-1-9 g 1). Listen for ten miles before you arrive; most of what you want to know has already been said.

Phraseology from AIM 4-1-9 c 1, g 1, g 8, h; TBL 4-1-1; 4-3-3. What TowerTalk grades against →

The calls you will make here

• CTAF radio calls at non-towered airports →
• Traffic pattern position reports →

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