Non-towered · Class G at the surface
Ross International (7S8) radio calls
Sweetgrass, MTFAA identifier 7S8; no ICAO code assigned
Ross International is a non-towered airport in Sweetgrass, MT. Nobody clears you to do anything: you self-announce on the CTAF, 122.8, as Ross International Traffic, with the airport name at the start and end of each call.
No Class B, C, D or E surface area is designated for this airport in the FAA data, so the airspace at the surface is Class G.
Frequencies
| CTAFRoss International Traffic | 122.8 |
|---|
Airport
- Runways
- 07 · 25
- Elevation
- 3,553 ft
- Position
- 48.999, -111.978
Non-towered airport: self-announce on the CTAF
Sample calls at 7S8
Ross International has no operating control tower. Every call below goes out on the CTAF, 122.8, 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.
- Tune 122.8. 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).
- YouRoss International traffic, Cessna Three One Six Zero Foxtrot, taxiing to runway zero seven, Ross International.
- YouRoss International traffic, Cessna Six Zero Foxtrot, departing runway zero seven, departing the pattern to the north, Ross International.
- 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).
- YouRoss International traffic, Cessna Three One Six Zero Foxtrot, one zero miles south, two thousand five hundred, landing Ross International, Ross International.
- YouRoss International UNICOM, Cessna Six Zero Foxtrot, one zero miles south, request wind and runway information, Ross International.
- 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.
- YouRoss International traffic, Cessna Six Zero Foxtrot, entering left downwind runway zero seven, full stop, Ross International.
- YouRoss International traffic, Cessna Six Zero Foxtrot, left base runway zero seven, Ross International.
- YouRoss International traffic, Cessna Six Zero Foxtrot, final runway zero seven, full stop, Ross International.
- YouRoss International traffic, Cessna Six Zero Foxtrot, clear of runway zero seven, Ross 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
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Frequencies, runways and airspace from the FAA National Airspace System Resources (NASR) 28-day subscription, cycle effective Sep 3, 2026. Training use only. Always verify against a current Chart Supplement and sectional chart before flight; frequencies change. TowerTalk is not affiliated with the FAA. Report a discrepancy.
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