The Australian Transport Safety Bureau (ATSB) is investigating a loss of separation incident near Sydney Airport, involving a United Airlines Boeing 777-300ER and a Virgin Australia ATR 72.

The incident took place on 22 January afternoon. During its initial climb, the United widebody, registered N2333U, turned right, resulting in a loss of separation with the Virgin Australia ATR, which had departed from a parallel runway.

The United 777 was bound for San Francisco, while the ATR 72, registered VH-FVQ, was headed for Tamworth in New South Wales state.

The ATSB states that it is in contact with both carriers to obtain relevant incident data. It will release a report at the end of investigations, slated for the third quarter of the year.

Cirium fleets data shows that United took delivery of the 777 in 2017, while Virgin Australia took delivery of the turboprop in 2012.