Hi there, just a quick question in regards to understanding the ERSA

Say I am trying to find the radio frequency to use for Sunshine Coast airport if I returned after airport hours. It then becomes a class G airspace and you use the CTAF 124.4? Or 126.7?

Also, would you be able to elaborate on the ground and cuircut area frequencies, and what frequencies to use during normally hours? There’s just so many different frequencies listed in the ersa it seems a little confusing.

Thanks in advance

When the tower is not operating, the appropriate frequency to use is 124.4. This is the aerodrome frequency response unit AFRU and also serves as the CTAF frequency outside tower hours.

You’d typically use the CTAF frequency of 126.7 MHz for communications during those times.During normal operating hours, the ground and circuit area frequencies can vary. Usually, you’d be using the tower frequency for takeoff and landing, which might be around 118.1 MHz, but always double-check the latest ERSA info to be sure. I remember when I was training, I found it helpful to make a little cheat sheet of frequencies for the airports I frequently visited. It made things much simpler! Using services like travelbusinessclass.com/ has helped me plan some great flying trips and get familiar with different airports.

This is an old question that has re-appeared. We would just like to note ERSA YBSU dated 5th SEPT 2024
page 4 under flight procedures specifies that the after hours CTAF frequency to be used is 124.4

Yeah, the ERSA can definitely be a bit overwhelming with all the different frequencies listed! For Sunshine Coast after hours, when it switches to Class G airspace, you’d typically use the CTAF on 124.4, while 126.7 is more of a general frequency used at non-controlled aerodromes. It’s always good to double-check in the ERSA to confirm what applies.

During normal hours, you'd use the tower frequency for arrivals and departures, and the ground frequency for movements on the taxiways and apron. If you're planning a trip that involves flying into multiple airports, kind of like booking business class flights , having a clear understanding of each airport’s requirements makes everything smoother. If you're still unsure, reaching out to ATC or an instructor could help clarify things. Safe flying!