Connecting Australian Aviation

Australian Organised Track Structure - AUSOTS

What is a Flex Track

A Flex Tracks is: "A non-fixed ATS route calculated on a daily basis to provide the most efficient operational flight conditions between specific city pairs".

Flex Tracks are designed to provide cost saving opportunities for airlines and benefits to the environment through significant reduction in fuel burn.

Flex Tracks are published to industry in three ways; via AFTN direct to airlines that have requested the Track Definition Messages (TDM), via NOTAM and on the Airservices web site.

Airservices Australia TDM Format:

Example
FF YBBBMONX
010728 YMMMZRZD
(TDM TRK SY11 05041707301
0504170530 0504171900
WLG WDH BOU VINAX TNK 17S130E 15S126E ONOXA
RTS/YSSY SY H202 WLG
RMK/0)

TDM Structure
(Message Priority) (Addressee)
(Message sent time) (Initiator)
TDM TRK (Flex Track Designator)* (Creation time and number)
(Flex Track validity start time) (Flex Track validity end time)
(Flex Track details)
RTS/ (tracking details from departure point to commencement of Flex Tracks) (tracking details from end of Flex Track to destination)**
RMK/ (Specific comments affecting the use of the Flex Track)

* Maximum of four alpha numeric characters

** Airservices Australia will not specify the flight planning requirements outside Australian administered airspace. Therefore the TDM will only include either the fixed route details for departures from an Australian airport to join the Flex Tracks or for Australian airport arrivals the fixed route details from the end of the Flex Tracks to the destination.

 

Last updated: June 5, 2013