Tiger Airways Australia Pty Ltd has advised that in response to this safety issue:
The documentation and training packages relating to the Avalon airspace structure are no longer in use or circulation at Tigerair [Tiger Airways Australia Pty Ltd]. Additionally, although Tigerair does not currently operate scheduled services to Avalon, all flight crew have been required to complete an [Avalon] airspace training package to ensure that they are aware of the airspace structure and its associated complexities and implications. This has been incorporated into Flight Crew initial training to ensure that existing and new Flight Crew have the same level of familiarity.
Since this event in 2011, the Tigerair process for the production, distribution and control of Operations Notices has changed substantially. Similarly, to support the introduction of organisational changes, whether due to internal or external factors, a process has been implemented that requires the risks associated with the change to be identified and managed. This process would apply for future changes to airspace that may introduce areas of risk to the Tigerair operation.
The ATSB is satisfied that the action taken by Tigerair has adequately addressed the safety issue.