Lake Elmo frequencies

Lake Elmo (21D) in St Paul, MN has no control tower, so nobody is sequencing traffic here — you announce your own position on 123.075. Every frequency below is in the order you tune it. · Open on the map

All of Lake Elmo — runways, frequencies, charts and live weather

Before taxi

ASOS/AWOS 120.075
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.
Clearance 118.625
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

CTAF 123.075
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 123.075
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.

Departure & arrival Minneapolis

App/Dep 121.2
One radar controller working both arrivals and departures — normal at a smaller TRACON. The same frequency takes your climb out and your inbound call.

What to say on 123.075

Nobody is sequencing traffic at 21D, so every call is you telling other aircraft where you are. Open and close with the field name so a pilot tuned to a shared frequency knows which airport you mean — 123.075 is not unique to Lake Elmo.

  • Inbound, 10 miles out Lake Elmo traffic, Skyhawk one two three four five, one zero miles south, inbound landing runway 14, Lake Elmo.
  • Entering the pattern Lake Elmo traffic, Skyhawk one two three four five, entering left downwind runway 14, Lake Elmo.
  • Before taking the runway Lake Elmo traffic, Skyhawk one two three four five, departing runway 14, Lake Elmo.

Pattern direction is not always left here — check the 21D traffic pattern before you announce a leg. The Chart Supplement is authoritative if 21D publishes a call name that differs from the airport's. Full guidance →

By procedure & sector (2 more)
335.5AGUDE STAR
335.65APCH/P DEP/P
Every 21D frequency, as one table
ASOS/AWOS120.075
Clearance118.625
CTAF123.075
UNICOM123.075
App/Dep121.2

Frequently asked

What is the CTAF at 21D?

Lake Elmo is non towered. The common traffic advisory frequency is 123.075 — announce your position and intentions on entry and on each leg of the pattern.

What is the ASOS/AWOS frequency at 21D?

ASOS/AWOS at Lake Elmo is 120.075. 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 21D?

App/Dep for Lake Elmo is 121.2, working as "Minneapolis". Call inbound for flight following or to begin an instrument approach.

Where do I get my clearance at 21D?

Clearance delivery at Lake Elmo is 118.625. Call before requesting taxi, with the current ATIS letter and your direction of flight.