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Trinity Health Systems Ann Arbor frequencies

Trinity Health Systems Ann Arbor (9MI0) in Ypsilanti, MI has no control tower, so nobody is sequencing traffic here — you announce your own position on 122.9. Every frequency below is in the order you tune it. · Open on the map

All of Trinity Health Systems Ann Arbor — runways, frequencies, charts and live weather

Taxi & takeoff

CTAF 122.9
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.

What to say on 122.9

Nobody is sequencing traffic at 9MI0, 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 — 122.9 is not unique to Trinity Health Systems Ann Arbor.

  • Inbound, 10 miles out Trinity Health Systems Ann Arbor traffic, Skyhawk one two three four five, one zero miles south, inbound landing, Trinity Health Systems Ann Arbor.
  • Entering the pattern Trinity Health Systems Ann Arbor traffic, Skyhawk one two three four five, entering left downwind , Trinity Health Systems Ann Arbor.
  • Before taking the runway Trinity Health Systems Ann Arbor traffic, Skyhawk one two three four five, departing , Trinity Health Systems Ann Arbor.

Pattern direction is not always left here — check the 9MI0 traffic pattern before you announce a leg. The Chart Supplement is authoritative if 9MI0 publishes a call name that differs from the airport's. Full guidance →

Every 9MI0 frequency, as one table
CTAF122.9

Frequently asked

What is the CTAF at 9MI0?

Trinity Health Systems Ann Arbor is non towered. The common traffic advisory frequency is 122.9 — announce your position and intentions on entry and on each leg of the pattern.

More about 9MI0

Frequencies from FAA NASR. For planning and education only; always verify against official sources.

Something here wrong or out of date? Report a data problem.