Aviation safety investigations & reports

Fuel imbalance involving Boeing 767, VH-EXZ during flight from Auckland NZ to Sydney, New South Wales, on 27 July 2019

Investigation number:
Status: Active
Investigation in progress
Phase: Final report: Internal review Read more information on this investigation phase


The ATSB is investigating a fuel imbalance involving a Boeing 767 freighter, registered VH-EXZ, which occurred during flight from Auckland, New Zealand to Sydney, New South Wales on 27 July 2019.

During taxi for departure, the crew received a fuel configuration alert due to an imbalance in the fuel content between the left and right wing fuel tanks. That imbalance continued to increase during the flight, but was rectified by the flight crew. It was later determined that the alert was due to an anomaly in the fuel transfer from the centre tank to the right wing tank.

As part of the investigation, the ATSB will interview the flight crew, review data from the aircraft’s flight data recorder and relevant records, and gather additional information as required.

A report will be released at the end of the investigation. Should a critical safety issue be identified during the course of the investigation, the ATSB will immediately notify those affected and seek safety action to address the issue.

General details
Date: 27 July 2019   Investigation status: Active  
  Investigation level: Short - click for an explanation of investigation levels  
Location   (show map): Auckland International Airport   Investigation phase: Final report: Internal review  
State: International   Occurrence type: Fuel systems  
  Occurrence category: Incident  
Report status: Pending   Highest injury level: None  
Anticipated completion: 3rd Quarter 2020    

Aircraft details

Aircraft details
Aircraft manufacturer The Boeing Company  
Aircraft model 767-3JHF  
Aircraft registration VH-EXZ  
Serial number 37808  
Type of operation Air Transport High Capacity  
Sector Jet  
Damage to aircraft Nil  
Departure point Auckland, NZ  
Destination Sydney, NSW  
Last update 25 May 2020