Investigation number
AO-2023-039
Occurrence date
Location
86 km west of Grafton Aerodrome, New South Wales
State
New South Wales
Report status
Pending
Investigation level
Defined
Investigation type
Occurrence Investigation
Investigation phase
Examination and analysis
Investigation status
Active
Aviation occurrence type
Loss of separation assurance
Occurrence category
Incident
Highest injury level
None
Anticipated completion

The ATSB is investigating a loss of separation assurance involving Embraer E190 (ERJ 190-100), registration VH-UZI and Embraer E190, registration VH-XVS, that occurred 86 km west of Grafton Aerodrome, New South Wales on 20 August 2023.

At approximately 1540 EST, Embraer E190 VH-UZI was conducting a flight from Hobart to Brisbane maintaining FL 350, while Embraer E190 VH-XVS was conducting a flight from Brisbane to Canberra and climbing to FL 360. Air traffic control instructed VH-UZI, which was maintaining FL 350, to turn immediately to avoid conflict with the climbing VH-XVS, which was on a reciprocal flight path. VH-XVS was instructed to descend immediately.

The evidence collection phase of the investigation will involve interviewing the air traffic controller and flight crew, reviewing air traffic surveillance data, and the collection of other relevant evidence.
 
A final report will be released at the conclusion of the investigation. Should a critical safety issue be identified during the course of the investigation, the ATSB will immediately notify the relevant parties, so that appropriate safety action can be taken.

Aircraft Details
Departure point
Brisbane Airport
Destination
Canberra Airport
Model
ERJ 190-100 IGW
Serial number
19000062
Sector
Jet
Registration
VH-XVS
Operation type
Part 121 Air transport operations - larger aeroplanes
Damage
Nil
Manufacturer
Embraer-Empresa Brasileira De Aeronautica
Aircraft Operator
Alliance Airlines Pty Limited
Aircraft Details
Departure point
Hobart Airport
Destination
Brisbane Airport
Model
ERJ 190-100 IGW
Serial number
19000191
Sector
Jet
Registration
VH-UZI
Operation type
Part 121 Air transport operations - larger aeroplanes
Damage
Nil
Manufacturer
Embraer-Empresa Brasileira De Aeronautica
Aircraft Operator
Alliance Airlines Pty Limited