Greenville Downtown Airport frequencies
Greenville Downtown Airport (GMU · KGMU) in Greenville, SC is a towered field, staffed 0700-2200. 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 Greenville Downtown Airport — runways, frequencies, charts and live weatherWhen the KGMU tower is closed
The tower is staffed 0700-2200. Outside those hours Greenville Downtown Airport has no operating control tower: it becomes a self announce field on 119.9, 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 KGMU airport page for the click sequence, and what to say on the radio.
Before taxi Greenville
- ATIS 127.075
- 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 127.075
- 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 Greenville
- Ground 121.25
- 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 119.9
- 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 Greer
- App/Dep 118.8 (BIMMR · BWALL departures)
- 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 119.9
- 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.
- 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 135.35 (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.
By procedure & sector (4 more)
| 118.8 | BIMMR DP, BWALL DP |
|---|---|
| 257.7 | LCL/P |
| 263.125 | OWING RCAG (LOW) |
| 270.275 | APCH/P DEP/P, BIMMR DP, BWALL DP |
Every KGMU frequency, as one table
| ATIS | 127.075 |
|---|---|
| ASOS/AWOS | 127.075 |
| Ground | 121.25 |
| Tower | 119.9 |
| CTAF | 119.9 |
| UNICOM | 122.95 |
| Flight service | 135.35 (LOW) |
| App/Dep | 118.8 · BIMMR · BWALL departures |
Frequently asked
What is the tower frequency at KGMU?
Greenville Downtown Airport tower is 119.9, calling "Greenville Tower". The tower is staffed 0700-2200.
What frequency do I use at KGMU when the tower is closed?
Outside 0700-2200, Greenville Downtown Airport has no operating control tower and becomes a self announce field. Use 119.9 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 KGMU?
Ground control at Greenville Downtown Airport is 121.25. 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 KGMU?
ATIS at Greenville Downtown Airport is 127.075. Listen before your first call and report the letter you have.
What is the approach frequency for KGMU?
App/Dep for Greenville Downtown Airport is 118.8, working as "Greer" (BIMMR · BWALL departures). Call inbound for flight following or to begin an instrument approach.
More about KGMU
Frequencies from FAA NASR. For planning and education only; always verify against official sources.