Investigation number
199903426
Occurrence date
State
Australian Capital Territory
Report release date
Report status
Final
Investigation type
Occurrence Investigation
Investigation status
Completed
Aviation occurrence type
Breakdown of co-ordination
Occurrence category
Incident

The identification and planned level (FL290) of the aircraft was coordinated with the Melbourne Sector 12 controller. The aircraft was observed on radar to maintain FL250. The amended level was not coordinated with sector 12. There was no infringement of separation standards. An investigation by Airservices Australia found: 1. that the sector did not have specific procedures to ensure that controllers on adjacent sectors were notified when sector 12 opened/closed, 2. the Hume sector controller did not coordinate the change of level with the sector 12 controller, 3. a console display notifying active sectors had not been updated, and 4. that the display did not provide an indication of combined sectors. Consequently, there had been some confusion in relation to the required coordination between sectors. The investigation is continuing.

Aircraft Details
Manufacturer
Cessna Aircraft Company
Model
500
Registration
VH-SOU
Sector
Jet
Departure point
Cooma NSW
Destination
Bankstown NSW
Damage
Nil