Operating outside controlled airspace

Most of what you are about to read are from the Aeronautical Information Publication (AIP)


This is what we operate out of in Mudgee.

Aircraft which are operating beyond the lateral limits or beneath the vertical lower limit of class C (controlled) airspace are in class G airspace. The controlled limit for Mudgee is 7,500’ when Williamtown is active. This can be found on NAIPS (National Aeronautical Information Processing System) and the area on a VNC/ERC (Newcastle) chart.

These aircraft are not subject to any form of control by anyone other than the pilot. There are certain rules and regulations for aircraft i.e. joining a circuit etc but apart from that a pilot needs no authority to fly a particular height or track.

Flight information Services (FIS)

One of the Air Traffic Services provided by AA is FIS. This service provides operational information, pre-flight information and in-flight information to aircraft operating in class G airspace.FIS areas along with the appropriate frequencies are found on ERC’s and ERSA. Read AIP GEN3.3 para2

Reports and Broadcasts

When operating in class G airspace, most important requirement is to keep a good lookout for all other traffic. Second only to this activity is the maintenance of a listening watch on the appropriate frequency.

There are 2 types of radio messages which should be monitored – Reports and broadcasts.

In a REPORT the pilot wishes to communicate with a particular ground station and the message will be addressed to that particular station. FR aircraft in class G airspace make few reports, however numerous reports are mandatory for IFR (Instrument Flight Rules) aircraft and an alert VFR pilot can gain much valuable traffic information by monitoring these messages.

In a BROADCAST the pilot wishes to communicate with all other aircraft in a particular area. The message will usually be address to ‘all stations’ and other pilots will reply if they consider it necessary. AIP ENR 1.1 page44 para20.1.13.2.table

CTAF A common traffic advisory frequency (CTAF) is allocated to the airspace in the vicinity of an aerodrome. Details are found in ERSA

No Air Traffic Service monitors the CTAF and pilots operate on an alert see and avoid principle by making and monitoring broadcast.

Aircraft approaching the CTAF aerodrome must make and inbound broadcast on the CTAF frequency by 10nm.

As well as making required radio broadcast, you must keep a good lookout as usual. AIP ENR1.4para3.2

Hence why I am always onto you to keep your head up looking out and eyes peeled.

Aircraft approaching the CTAF aerodrome are to broadcast on the appropriate frequency by 10nm inbound.

Remember:  INBOUND you are landing ;   OVERFLYING you are going somewhere else.

Aircraft departing the CTAF are to monitor the CTAF when ready to taxi.

Make broadcast before entering or backtracking a runway and broadcast your departure including runway used, direction of turn and departure direction.

While operating within the CTAF you should monitor all broadcast and keep a mnetal picture of the traffic situation adjusting your height or track as required to maintain separation from other aircraft.

This is the ‘alert see-and –avoid’ principle. Remember some aircraft may be operating without radio so keep a sharp lookout at all times. AIP ENR 1.1 para46.1- AIP ENR 1.1 para20.1 and ENR1.1 Page45 – AIP ENR 1.1 para20.1.13.2

I hope I haven’t bored you to much but there are reasons why we do things a certain way, legally and professionally.

Talk soon and safe flying!