Auburn Municipal Airport frequencies
Auburn Municipal Airport (S50) in Auburn, WA has no control tower, so nobody is sequencing traffic here — you announce your own position on 122.975. Every frequency below is in the order you tune it. · Open on the map
All of Auburn Municipal Airport — runways, frequencies, charts and live weatherBefore taxi
- ASOS/AWOS 118.050
- An automated weather station reading the field conditions aloud — wind, visibility, ceiling, temperature and altimeter. It replaces ATIS at a field with no controller to record one. Get the altimeter setting before you descend below the transition altitude.
- Clearance 123.85
- Clearance delivery issues your IFR clearance, and at busier fields your VFR departure instructions and squawk code. Call before you request taxi, with the ATIS letter and your intended direction of flight.
Taxi & takeoff
- CTAF 122.975
- 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.
- UNICOM 122.975
- A ground station run by the FBO rather than the FAA, for fuel, parking and airport services. Use it for services. Where the field has no separate CTAF, the same frequency doubles as the advisory frequency.
Departure & arrival Seattle
- App/Dep 123.85
- One radar controller working both arrivals and departures — normal at a smaller TRACON. The same frequency takes your climb out and your inbound call.
What to say on 122.975
Nobody is sequencing traffic at S50, 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 — 122.975 is not unique to Auburn Municipal Airport.
- Inbound, 10 miles out
Auburn traffic, Skyhawk one two three four five, one zero miles south, inbound landing runway 16, Auburn.
- Entering the pattern
Auburn traffic, Skyhawk one two three four five, entering left downwind runway 16, Auburn.
- Before taking the runway
Auburn traffic, Skyhawk one two three four five, departing runway 16, Auburn.
Pattern direction is not always left here — check the S50 traffic pattern before you announce a leg. The Chart Supplement is authoritative if S50 publishes a call name that differs from the airport's. Full guidance →
Every S50 frequency, as one table
| ASOS/AWOS | 118.050 |
|---|---|
| Clearance | 123.85 |
| CTAF | 122.975 |
| UNICOM | 122.975 |
| App/Dep | 123.85 |
Frequently asked
What is the CTAF at S50?
Auburn Municipal Airport is non towered. The common traffic advisory frequency is 122.975 — announce your position and intentions on entry and on each leg of the pattern.
What is the ASOS/AWOS frequency at S50?
ASOS/AWOS at Auburn Municipal Airport is 118.050. It is an automated broadcast, so there is no letter to report — just take the altimeter setting and wind.
What is the approach frequency for S50?
App/Dep for Auburn Municipal Airport is 123.85, working as "Seattle". Call inbound for flight following or to begin an instrument approach.
Where do I get my clearance at S50?
Clearance delivery at Auburn Municipal Airport is 123.85. Call before requesting taxi, with the current ATIS letter and your direction of flight.
More about S50
Frequencies from FAA NASR. For planning and education only; always verify against official sources.