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A332 / A333, en-route, North West Australia, 2012
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Revision as of 21:23, 21 March 2015 by Integrator1
On 31 March 2012 an Airbus A330-300 (PK-GPA) being operated by Garuda on a scheduled passenger flight from Bali (Denpasar) to Melbourne and an Airbus A330-200 (PK-GPO) being operated by Garuda on a scheduled passenger flight from Bali (Denpasar) to Sydney were both independently involved in losses of separation assurance because of issues arising from the short notice temporary implementation of TIBA procedures in an area of upper airspace following due to a shortage of controllers.
An Investigation was carried out by the Australian Transport Safety Bureau (ATSB).
It was noted that the basis for the determination that a Serious Incident had occurred was that two aircraft had operated in controlled airspace without ATC awareness because of issues related to the temporary implementation of TIBA procedures in a TRA when the provision of normally mainly procedural ATC service in an area of upper airspace controlled from Brisbane ACC could not be maintained. An overview of the airspace involved is shown below: