Towered · Class D surface area
Sioux Gateway/Brig General Bud Day Field (KSUX) radio calls
Sioux City, IAICAO KSUX · FAA SUX
Sioux Gateway/Brig General Bud Day Field is a towered airport in Sioux City, IA. You will taxi with Ground on 121.9 and work Sioux City Tower on 118.7, after listening to the ATIS on 119.45. The approach control is Sioux City Approach on 124.6, which is who you call for VFR flight following. The tower operates 0600-2130 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 0600-2130; OTHER TIMES CLASS E.
Frequencies
| ATIS | 119.45 |
|---|---|
| GroundSioux City Ground | 121.9 |
| TowerSioux City Tower | 118.7 |
| CTAF | 118.7 |
| UNICOM | 122.95 |
| Approach / DepartureSioux City Approach | 124.6 |
Airport
- Runways
- 13 · 31 · 18 · 36
- Elevation
- 1,099 ft
- Tower hours
- 0600-2130 local
- Position
- 42.401, -96.384
Towered airport with a Class D surface area
Sample calls at KSUX
Sioux Gateway/Brig General Bud Day Field 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 13; 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 119.45 first and note the letter; "with Information (letter)" on your first call lets the controller skip the weather (JO 7110.65 3-10-1).
- YouSioux City Ground, Cessna Three One Six Zero Foxtrot, at the ramp with Information Alpha, request taxi, VFR departure to the north.
- ATCCessna Six Zero Foxtrot, Sioux City Ground, runway one three, taxi via Alpha, hold short of runway one three.
- YouRunway one three, taxi via Alpha, hold short of runway one three, 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).
- YouSioux City Tower, Cessna Six Zero Foxtrot, holding short runway one three, ready for departure, northbound.
- ATCCessna Six Zero Foxtrot, Sioux City Tower, runway one three, cleared for takeoff.
- YouRunway one three, cleared for takeoff, Cessna Six Zero Foxtrot.
- ATCCessna Six Zero Foxtrot, contact Sioux City Approach one two four point six.
- Youone two four point six, Cessna Six Zero Foxtrot.
- YouSioux City 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, Sioux City 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).
- YouSioux City Tower, Cessna Three One Six Zero Foxtrot, one five miles north, three thousand, with Information Bravo, landing Sioux City.
- ATCCessna Six Zero Foxtrot, Sioux City Tower, enter left downwind runway one three, report midfield downwind.
- YouEnter left downwind runway one three, report midfield, Cessna Six Zero Foxtrot.
- YouSioux City Tower, Cessna Six Zero Foxtrot, midfield left downwind, runway one three.
- ATCCessna Six Zero Foxtrot, runway one three, cleared to land, wind two seven zero at eight.
- YouRunway one three, 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 Sioux City Ground one two one point niner.
- YouExit next taxiway, one two one point niner, Cessna Six Zero Foxtrot.
- YouSioux City Ground, Cessna Six Zero Foxtrot, clear of runway one three, taxi to the ramp.
If things change. The tower operates 0600-2130 local. Outside those hours the airport is a non-towered field: self-announce on the CTAF, 118.7 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 →
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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.
