Radio use at CTAFs (when the YBAF and YBSU Towers are closed)

Calls recommended at all times

SituationExample broadcast
Before take-off or during taxiArcherfield traffic, C172, ZTQ taxiing runway 10L for Gold Coast, Archerfield.
Inbound at least 10 nm from the aerodrome or further for high performance aircraft or busy aerodromesWellcamp traffic, C172, ZTQ one zero miles north inbound 1,500, estimating circuit at two five, Wellcamp.
Overflying or in the vicinity of Archerfield outside tower hours, but not landing, or further for high performance aircraftArcherfield traffic, C172, ZTQ one zero miles south 1,500, overflying, estimating overhead two five, Archerfield.

Calls when there is other traffic

SituationExample broadcast
Entering a runwayArcherfield traffic, C172, ZTQ lining up 10L, Archerfield.
Joining the circuitArcherfield traffic, C172, ZTQ joining crosswind, runway 10L, Archerfield.
Making a straight in approach, not less than 3 nm from the touch-down threshold*Sunshine Coast traffic, C172, ZTQ joining 3 nm final, straight-in approach runway 13, Sunshine Coast.
Joining on base legCaboolture traffic, C172, ZTQ joining base, runway 12, Caboolture.
During an instrument approach, either when established at the final approach fix, or when commencing the missed approachSunshine Coast traffic, C172, ZTQ conducting missed approach, runway 13, tracking to the south east, climbing 3,000, Sunshine Coast.
Once clear of the runway(s)Redcliffe traffic, C172, ZTQ runway 25 vacated, Redcliffe.

*Pilots should be aware that a GNSS indication of 3 from an aerodrome may not be 3 nm to the runway threshold.

Radio Frequencies

Frequency nameFrequency
Archerfield ground119.9
Archerfield tower (check ATIS)118.1 or 123.6
Archerfield ATIS120.9
Brisbane approach125.7
Southport CTAF119.0
Sunshine Coast ground121.1
Sunshine Coast tower124.4
Sunshine Coast ATIS119.8
Sunshine Coast VOR (also contains ATIS information)114.2
Brisbane Centre in the YBSU CCT area (outside TWR HR)129.0
Brisbane Centre on ground at YBSU (outside TWR HR)135.2

Phone numbers

ContactPhone number
Archerfield tower07 3275 8230
Archerfield ATIS07 3275 8201
Sunshine Coast tower07 5458 2953
Sunshine Coast ATIS07 5458 2955
CENSAR1800 814 931
Updated: 16 July 2025
Online version available at: https://www.casa.gov.au//index.php/resources-and-education/publications/industry-guides/pilot-guides/stay-ontrack-series/stay-ontrack-flying-brisbane-region/radio-use-ctafs-when-ybaf-and-ybsu-towers-are-closed
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