Big Southern Butte frequencies
Big Southern Butte (U46) in Atomic City, ID has no control tower, so nobody is sequencing traffic here — you announce your own position on 122.9. Every frequency below is in the order you tune it. · Open on the map
All of Big Southern Butte — runways, frequencies, charts and live weatherTaxi & takeoff
- CTAF 122.9
- The common frequency pilots use to announce themselves to each other at a field with no operating control tower. Nobody is controlling traffic — you are self announcing. Report your position and intentions on entry and on each leg of the pattern, and listen well before you transmit.
What to say on 122.9
Nobody is sequencing traffic at U46, so every call is you telling other aircraft where you are. Open and close with the field name so a pilot tuned to a shared frequency knows which airport you mean — 122.9 is not unique to Big Southern Butte.
- Inbound, 10 miles out
Big Southern Butte traffic, Skyhawk one two three four five, one zero miles south, inbound landing runway 01, Big Southern Butte.
- Entering the pattern
Big Southern Butte traffic, Skyhawk one two three four five, entering left downwind runway 01, Big Southern Butte.
- Before taking the runway
Big Southern Butte traffic, Skyhawk one two three four five, departing runway 01, Big Southern Butte.
Pattern direction is not always left here — check the U46 traffic pattern before you announce a leg. The Chart Supplement is authoritative if U46 publishes a call name that differs from the airport's. Full guidance →
Every U46 frequency, as one table
| CTAF | 122.9 |
|---|
Frequently asked
What is the CTAF at U46?
Big Southern Butte is non towered. The common traffic advisory frequency is 122.9 — announce your position and intentions on entry and on each leg of the pattern.
More about U46
Frequencies from FAA NASR. For planning and education only; always verify against official sources.
Something here wrong or out of date? Report a data problem.