Towered · Class D surface area
Greenville Downtown (KGMU) radio calls
Greenville, SCICAO KGMU · FAA GMU
Greenville Downtown is a towered airport in Greenville, SC. You will taxi with Ground on 121.25 and work Greenville Tower on 119.9, after listening to the ATIS on 127.075. The approach control is Greer Approach on 118.8, which is who you call for VFR flight following. The tower operates 0700-2200 local.
The airport has a Class D surface area: two-way radio communication with the tower must be established before entering. Published hours: CLASS D SVC 0700-2200; OTHER TIMES CLASS G.
Frequencies
| ATIS | 127.075 |
|---|---|
| GroundGreenville Ground | 121.25 |
| TowerGreenville Tower | 119.9 |
| CTAF | 119.9 |
| UNICOM | 122.95 |
| Approach / DepartureGreer Approach | 118.8 |
Airport
- Runways
- 01 · 19 · 10 · 28
- Right-hand pattern
- Runway 19, 28
- Elevation
- 1,048 ft
- Pattern altitude
- 800 ft MSL (published TPA)
- Tower hours
- 0700-2200 local
- Position
- 34.848, -82.350
Towered airport with a Class D surface area
Sample calls at KGMU
Greenville Downtown has a Class D surface area: establish two-way communication with the tower before entering (AIM 3-2-5 b 3). A reply that uses your call sign, even "standby", establishes it; "aircraft calling, standby" does not. The calls below use runway 01; the tower assigns the runway in use on the day.
The aircraft is the AIM’s own example, Cessna Three One Six Zero Foxtrot; the squawk codes, altitudes and headings are illustrative. Frequencies, station names and runway numbers are this airport’s, from the FAA data.
- Listen to the ATIS on 127.075 first and note the letter; "with Information (letter)" on your first call lets the controller skip the weather (JO 7110.65 3-10-1).
- YouGreenville Ground, Cessna Three One Six Zero Foxtrot, at the ramp with Information Alpha, request taxi, VFR departure to the north.
- ATCCessna Six Zero Foxtrot, Greenville Ground, runway zero one, taxi via Alpha, hold short of runway zero one.
- YouRunway zero one, taxi via Alpha, hold short of runway zero one, Cessna Six Zero Foxtrot.
- The runway, any clearance onto a runway and every hold-short instruction are read back (AIM 4-3-18 a 9). Stay on Ground through the run-up and switch to Tower when ready (AIM 4-3-14 a).
- YouGreenville Tower, Cessna Six Zero Foxtrot, holding short runway zero one, ready for departure, northbound.
- ATCCessna Six Zero Foxtrot, Greenville Tower, runway zero one, cleared for takeoff.
- YouRunway zero one, cleared for takeoff, Cessna Six Zero Foxtrot.
- ATCCessna Six Zero Foxtrot, contact Greer Approach one one eight point eight.
- Youone one eight point eight, Cessna Six Zero Foxtrot.
- YouGreer Approach, Cessna Three One Six Zero Foxtrot, two thousand climbing four thousand five hundred, request VFR flight following to the north.
- ATCCessna Six Zero Foxtrot, Greer Approach, radar contact, altimeter three zero zero one.
- YouAltimeter three zero zero one, Cessna Six Zero Foxtrot.
- Inbound: call the tower about 15 miles out, before the Class D boundary (AIM 4-3-2 a).
- YouGreenville Tower, Cessna Three One Six Zero Foxtrot, one five miles north, three thousand, with Information Bravo, landing Greenville.
- ATCCessna Six Zero Foxtrot, Greenville Tower, enter left downwind runway zero one, report midfield downwind.
- YouEnter left downwind runway zero one, report midfield, Cessna Six Zero Foxtrot.
- YouGreenville Tower, Cessna Six Zero Foxtrot, midfield left downwind, runway zero one.
- ATCCessna Six Zero Foxtrot, runway zero one, cleared to land, wind two seven zero at eight.
- YouRunway zero one, cleared to land, Cessna Six Zero Foxtrot.
- The wind is information: acknowledged, not read back. Exit at the first available taxiway or as told, taxi clear of the hold-short markings, and change to Ground only when the tower says (AIM 4-3-21).
- ATCCessna Six Zero Foxtrot, exit at the next taxiway, contact Greenville Ground one two one point two five.
- YouExit next taxiway, one two one point two five, Cessna Six Zero Foxtrot.
- YouGreenville Ground, Cessna Six Zero Foxtrot, clear of runway zero one, taxi to the ramp.
If things change. The tower operates 0700-2200 local. Outside those hours the airport is a non-towered field: self-announce on the CTAF, 119.9 with the airport name first and last, and the surface area reverts to Class E or Class G as published in the Chart Supplement.
Phraseology from AIM 4-2-3; 4-3-18 a 9; 4-3-14; 4-3-21; 4-4-7 b; 4-1-18 a 3; 3-2-5 b 3; 4-3-2 a. What TowerTalk grades against →
The calls you will make here
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Frequencies, runways and airspace from the FAA National Airspace System Resources (NASR) 28-day subscription, cycle effective Sep 3, 2026. Training use only. Always verify against a current Chart Supplement and sectional chart before flight; frequencies change. TowerTalk is not affiliated with the FAA. Report a discrepancy.
