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Old 8th May 2015, 03:38
  #26 (permalink)  
Join Date: Dec 2000
Location: Australia
Posts: 1,052
As you well know, there are no such things as "ATC frequencies", but for the education of others:

There are frequencies used by Air Traffic Controllers to provide services, including Class G FIA (Flight Information Area) frequencies (otherwise known as "Area" frequencies). These are not "control" frequencies, where separation services are provided. It is entirely appropriate - and required in AIP - to use FIA frequencies for their intended purpose.

To not use or monitor FIA frequencies when appropriate and required could cause a nasty situation, given the wrong circumstances.

Whether an FIA frequency is retransmitted onto other frequencies by Airservices is irrelevant to pilots, and not a reason to not use it or ignore the rules.

AIP ENR 1.1 para 44.1:

Pilots of radio-equipped VFR aircraft must listen out on the appropriate VHF frequency and announce if in potential conflict. Pilots intercepting broadcasts from aircraft in their vicinity which are considered to be in potential conflict with their own aircraft must acknowledge by transmitting own call-sign and, as appropriate, aircraft type, position, actual level and intentions.

The appropriate VHF frequency stated in para 44.1 is:

a. In the vicinity of an aerodrome depicted on aeronautical charts, with a discrete frequency, the discrete CTAF shown (including Broadcast Area CTAF) or otherwise;

b. In the vicinity of an aerodrome depicted on aeronautical charts, with no discrete frequency shown, the Multicom 126.7; or

c. In all other cases, Area VHF.
These procedures have been in place for many (the last 10+?) years. For CASA to try and undo them now would in itself present a safety issue.

I'm not aware of any formal intention to publish all currently uncharted aerodromes on aviation charts, which would clearly be impractical.

If there are such aerodromes that have a significant level of traffic then they probably should be published on charts, in the interests of safety of both the users and itinerant traffic, who would be unaware of the aerodrome. In these cases, when published on aeronautical charts, Multicom 126.7 would apply.

It's not rocket science.

If the level of chatter from an unpublished aerodrome or group of aerodromes causes congestion on an Area frequency, then any one of a number of existing measures would be taken to address that (publish the aerodrome on charts, declare a Broadcast Area, etc.).
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