Non-towered · Class G at the surface
Marshalltown Municipal (KMIW) radio calls
Marshalltown, IAICAO KMIW · FAA MIW
Marshalltown Municipal is a non-towered airport in Marshalltown, IA. Nobody clears you to do anything: you self-announce on the CTAF, 122.8, as Marshalltown Municipal Traffic, with the airport name at the start and end of each call. The approach control for the area is Des Moines Approach on 120.9, which is who you call for VFR flight following.
No Class B, C, D or E surface area is designated for this airport in the FAA data, so the airspace at the surface is Class G.
Frequencies
| Clearance Delivery | 120.9 |
|---|---|
| CTAFMarshalltown Municipal Traffic | 122.8 |
| Approach / DepartureDes Moines Approach | 120.9 |
Airport
- Runways
- 13 · 31 · 18 · 36
- Elevation
- 975 ft
- Position
- 42.113, -92.918
Non-towered airport: self-announce on the CTAF
Sample calls at KMIW
Marshalltown Municipal has no operating control tower. Every call below goes out on the CTAF, 122.8, to the other aircraft, not to a controller. The runway shown is 13; use whichever runway the wind and the traffic dictate 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.
- Tune 122.8. Nobody clears you; you announce and you listen. The airport name goes at the start and the end of every call, and the runway is always a number, never "the active" (AIM 4-1-9 g 8).
- YouMarshalltown Municipal traffic, Cessna Three One Six Zero Foxtrot, taxiing to runway one three, Marshalltown Municipal.
- YouMarshalltown Municipal traffic, Cessna Six Zero Foxtrot, departing runway one three, departing the pattern to the north, Marshalltown Municipal.
- Announce until you are about 10 miles out; on the way back, start announcing at 10 miles (AIM 4-1-9 c 1, TBL 4-1-1).
- YouMarshalltown Municipal traffic, Cessna Three One Six Zero Foxtrot, one zero miles south, two thousand five hundred, landing Marshalltown Municipal, Marshalltown Municipal.
- YouMarshalltown Municipal UNICOM, Cessna Six Zero Foxtrot, one zero miles south, request wind and runway information, Marshalltown Municipal.
- A UNICOM operator, if one is on, answers with the wind and the runway in use (AIM 4-1-9 h). If nobody answers, choose the runway from the wind and the pattern traffic you can hear.
- YouMarshalltown Municipal traffic, Cessna Six Zero Foxtrot, entering left downwind runway one three, full stop, Marshalltown Municipal.
- YouMarshalltown Municipal traffic, Cessna Six Zero Foxtrot, left base runway one three, Marshalltown Municipal.
- YouMarshalltown Municipal traffic, Cessna Six Zero Foxtrot, final runway one three, full stop, Marshalltown Municipal.
- YouMarshalltown Municipal traffic, Cessna Six Zero Foxtrot, clear of runway one three, Marshalltown Municipal.
If things change. Want flight following after departure? Call Des Moines Approach on 120.9 once clear of the pattern: identification, type, position, altitude, destination, "request VFR flight following" (AIM 4-1-18 a 3). Do not use "any traffic in the area, please advise"; the AIM says it is not to be used under any condition (AIM 4-1-9 g 1).
Phraseology from AIM 4-1-9 c 1, g 1, g 8, h; TBL 4-1-1; 4-3-3. 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.
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