Rapid City Regional Airport frequencies
Rapid City Regional Airport (RAP · KRAP) in Rapid City, SD is a towered field, staffed 0600-2200. 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 Rapid City Regional Airport — runways, frequencies, charts and live weatherWhen the KRAP tower is closed
The tower is staffed 0600-2200. Outside those hours Rapid City Regional Airport has no operating control tower: it becomes a self announce field on 125.85, 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 KRAP airport page for the click sequence, and what to say on the radio.
Before taxi Rapid City
- ASOS/AWOS 118.525
- 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 121.9
- 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 Rapid City
- 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 125.85
- 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.
Departure & arrival Ellsworth
- App/Dep 119.5
- One radar controller working both arrivals and departures — normal at a smaller TRACON. The same frequency takes your climb out and your inbound call.
Also
- CTAF 125.85
- 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 127.95 (LOW/HIGH)
- 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 (8 more)
| 41.925 | NG OPS |
|---|---|
| 123.05 | NG OPS |
| 238.375 | NG OPS |
| 243.0 | EMERG |
| 257.8 | LCL/P |
| 259.1 | APCH/P |
| 289.4 | DEP/P |
| 338.2 | RAPID CITY RCAG (LOW/HIGH) |
Every KRAP frequency, as one table
| ASOS/AWOS | 118.525 |
|---|---|
| Clearance | 121.9 |
| Ground | 121.9 |
| Tower | 125.85 |
| CTAF | 125.85 |
| UNICOM | 122.95 |
| Flight service | 127.95 (LOW/HIGH) |
| Emergency | 121.5 |
| App/Dep | 119.5 |
Frequently asked
What is the tower frequency at KRAP?
Rapid City Regional Airport tower is 125.85, calling "Rapid City Tower". The tower is staffed 0600-2200.
What frequency do I use at KRAP when the tower is closed?
Outside 0600-2200, Rapid City Regional Airport has no operating control tower and becomes a self announce field. Use 125.85 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 KRAP?
Ground control at Rapid City Regional 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 ASOS/AWOS frequency at KRAP?
ASOS/AWOS at Rapid City Regional Airport is 118.525. 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 KRAP?
App/Dep for Rapid City Regional Airport is 119.5, working as "Ellsworth". Call inbound for flight following or to begin an instrument approach.
Where do I get my clearance at KRAP?
Clearance delivery at Rapid City Regional Airport is 121.9. Call before requesting taxi, with the current ATIS letter and your direction of flight.
More about KRAP
Frequencies from FAA NASR. For planning and education only; always verify against official sources.