Mayo Clinic St Marys Hospital frequencies

Mayo Clinic St Marys Hospital (99MN) in Rochester, MN has no control tower, so nobody is sequencing traffic here — you announce your own position on 123.05. Every frequency below is in the order you tune it. · Open on the map

All of Mayo Clinic St Marys Hospital — runways, frequencies, charts and live weather

Taxi & takeoff

CTAF 123.05
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 123.05
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 Rochester

App/Dep 119.8
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 123.05

Nobody is sequencing traffic at 99MN, 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 — 123.05 is not unique to Mayo Clinic St Marys Hospital.

  • Inbound, 10 miles out Mayo Clinic St Marys Hospital traffic, Skyhawk one two three four five, one zero miles south, inbound landing, Mayo Clinic St Marys Hospital.
  • Entering the pattern Mayo Clinic St Marys Hospital traffic, Skyhawk one two three four five, entering left downwind , Mayo Clinic St Marys Hospital.
  • Before taking the runway Mayo Clinic St Marys Hospital traffic, Skyhawk one two three four five, departing , Mayo Clinic St Marys Hospital.

Pattern direction is not always left here — check the 99MN traffic pattern before you announce a leg. The Chart Supplement is authoritative if 99MN publishes a call name that differs from the airport's. Full guidance →

By procedure & sector (1 more)
251.125APCH/P DEP/P
Every 99MN frequency, as one table
CTAF123.05
UNICOM123.05
App/Dep119.8

Frequently asked

What is the CTAF at 99MN?

Mayo Clinic St Marys Hospital is non towered. The common traffic advisory frequency is 123.05 — announce your position and intentions on entry and on each leg of the pattern.

What is the approach frequency for 99MN?

App/Dep for Mayo Clinic St Marys Hospital is 119.8, working as "Rochester". Call inbound for flight following or to begin an instrument approach.