Charles M. Schulz Sonoma County Airport frequencies
Charles M. Schulz Sonoma County Airport (STS · KSTS) in Santa Rosa, CA is a towered field, staffed 0700-2000. Every frequency below is in the order you tune it, from the first call to the handoff on climb out. · Open on the map
All of Charles M. Schulz Sonoma County Airport — runways, frequencies, charts and live weatherWhen the KSTS tower is closed
The tower is staffed 0700-2000. Outside those hours Charles M. Schulz Sonoma County Airport has no operating control tower: it becomes a self announce field on 118.5, and separation from other traffic is yours, not a controller's. Report your position and intentions on entry and on each leg of the pattern.
Runway lighting is often pilot controlled once the tower closes — check the KSTS airport page for the click sequence, and what to say on the radio.
Before taxi Santa Rosa
- ATIS 120.55
- A recorded loop of the field's weather, active runway and any notices, updated hourly or whenever conditions change. Listen before your first call, and tell the controller which letter you have so they do not read it to you again.
- ASOS/AWOS 120.55
- 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.
Taxi & takeoff Santa Rosa
- Ground 121.9
- Ground control owns every taxiway and inactive runway on the field. Call for taxi with your position and destination on the field. You need an explicit clearance to cross any runway, including one that is not in use.
- Tower 118.5
- Tower owns the active runways and the surrounding surface area. Call before entering the surface area inbound, and hold short until you are cleared to take off or to cross.
Also
- CTAF 118.5
- 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 122.95
- 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.
- Flight service 127.8 (LOW)
- Flight Service handles briefings, flight plans and en route advisories, reached here through a remote outlet. Open and close VFR flight plans, and get updated weather in the air. 1-800-WX-BRIEF reaches the same specialists from the ground.
- Emergency 121.5
- 121.5 is the international emergency and distress frequency, monitored continuously. Declare on it if you are in trouble, and monitor it as a second radio when you have one free.
By procedure & sector (3 more)
| 116.15/108Y | STS DME |
|---|---|
| 353.5 | MOUNT TAMALPAIS RCAG (LOW) |
| 363.0 | LCL/P |
Every KSTS frequency, as one table
| ATIS | 120.55 |
|---|---|
| ASOS/AWOS | 120.55 |
| Ground | 121.9 |
| Tower | 118.5 |
| CTAF | 118.5 |
| UNICOM | 122.95 |
| Flight service | 127.8 (LOW) |
| Emergency | 121.5 |
Frequently asked
What is the tower frequency at KSTS?
Charles M. Schulz Sonoma County Airport tower is 118.5, calling "Santa Rosa Tower". The tower is staffed 0700-2000.
What frequency do I use at KSTS when the tower is closed?
Outside 0700-2000, Charles M. Schulz Sonoma County Airport has no operating control tower and becomes a self announce field. Use 118.5 as the CTAF and report your position and intentions — there is nobody to clear you, so separation is yours.
What is the ground frequency at KSTS?
Ground control at Charles M. Schulz Sonoma County Airport is 121.9. You need an explicit clearance from ground to cross any runway while taxiing, including one that is not in use.
What is the ATIS frequency at KSTS?
ATIS at Charles M. Schulz Sonoma County Airport is 120.55. Listen before your first call and report the letter you have.
More about KSTS
Frequencies from FAA NASR. For planning and education only; always verify against official sources.