Non-towered · Class G at the surface

Ennis Big Sky (KEKS) radio calls

Ennis, MTICAO KEKS · FAA EKS

Ennis Big Sky is a non-towered airport in Ennis, MT. Nobody clears you to do anything: you self-announce on the CTAF, 122.8, as Ennis Big Sky Traffic, with the airport name at the start and end of each call. The approach control for the area is Big Sky Approach on 118.975, which is who you call for VFR flight following.

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

CTAFEnnis Big Sky Traffic122.8
Approach / DepartureBig Sky Approach118.975

Airport

Runways
16 · 34
Right-hand pattern
Runway 16
Elevation
5,433 ft
Position
45.276, -111.649

Non-towered airport: self-announce on the CTAF

Sample calls at KEKS

Ennis Big Sky 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 16, which has a right-hand pattern; 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 122.8. 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).
  2. YouEnnis Big Sky traffic, Cessna Three One Six Zero Foxtrot, taxiing to runway one six, Ennis Big Sky.
  3. YouEnnis Big Sky traffic, Cessna Six Zero Foxtrot, departing runway one six, departing the pattern to the north, Ennis Big Sky.
  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. YouEnnis Big Sky traffic, Cessna Three One Six Zero Foxtrot, one zero miles south, two thousand five hundred, landing Ennis Big Sky, Ennis Big Sky.
  6. YouEnnis Big Sky UNICOM, Cessna Six Zero Foxtrot, one zero miles south, request wind and runway information, Ennis Big Sky.
  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. YouEnnis Big Sky traffic, Cessna Six Zero Foxtrot, entering left downwind runway one six, full stop, Ennis Big Sky.
  9. YouEnnis Big Sky traffic, Cessna Six Zero Foxtrot, left base runway one six, Ennis Big Sky.
  10. YouEnnis Big Sky traffic, Cessna Six Zero Foxtrot, final runway one six, full stop, Ennis Big Sky.
  11. YouEnnis Big Sky traffic, Cessna Six Zero Foxtrot, clear of runway one six, Ennis Big Sky.

If things change. Want flight following after departure? Call Big Sky Approach on 118.975 once clear of the pattern: identification, type, position, altitude, destination, "request VFR flight following" (AIM 4-1-18 a 3). 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).

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

Nearby in Montana

Frequencies, runways and airspace from the FAA National Airspace System Resources (NASR) 28-day subscription, cycle effective Oct 29, 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.