Tiber Dam frequencies

Tiber Dam (B70) in Tiber Dam, MT 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

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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 B70, 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 Tiber Dam.

  • Inbound, 10 miles out Tiber Dam traffic, Skyhawk one two three four five, one zero miles south, inbound landing runway 12, Tiber Dam.
  • Entering the pattern Tiber Dam traffic, Skyhawk one two three four five, entering left downwind runway 12, Tiber Dam.
  • Before taking the runway Tiber Dam traffic, Skyhawk one two three four five, departing runway 12, Tiber Dam.

Pattern direction is not always left here — check the B70 traffic pattern before you announce a leg. The Chart Supplement is authoritative if B70 publishes a call name that differs from the airport's. Full guidance →

Every B70 frequency, as one table
CTAF122.9

Frequently asked

What is the CTAF at B70?

Tiber Dam 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.