Aviation safety investigations & reports

Performance related event - Airbus, A321-231, VH-VWX, Darwin Airport, 12 June 2011

Investigation number:
Status: Completed
Investigation completed


Download Final Report - Bulletin
[Download  PDF: 5.43MB]

During preflight performance calculations, the crew of an Airbus A321 inadvertently referenced the performance chart for a longer runway length. That produced inappropriately high take-off reference speeds that would have adversely affected the operation of the aircraft in the case of an engine failure.

Jetstar Airways advised that they had reminded pilots to independently calculate takeoff data and prohibited the use of bookmarking the performance manual. They also commenced an internal investigation.

The application of correct operating data is a foundational and critical element of flight safety, but errors in the calculation, entry and checking of data are not uncommon. The ATSB has published a research report that addresses this issue.

Download Final Report - Bulletin
[Download  PDF: 5.43MB]
General details
Date: 12 June 2011   Investigation status: Completed  
Time: 1700 CST   Investigation level: Short - click for an explanation of investigation levels  
Location   (show map): Darwin Airport    
State: Northern Territory   Occurrence type: Aircraft Separation  
Release date: 12 December 2011   Occurrence category: Incident  
Report status: Final   Highest injury level: None  

Aircraft details

Aircraft details
Aircraft manufacturer Airbus Industrie  
Aircraft model A321  
Aircraft registration VH-VWX  
Serial number 3899  
Operator Jetstar  
Type of operation Air Transport High Capacity  
Damage to aircraft Nil  
Departure point Darwin, NT  
Destination Denpasar, Indonesia  
Last update 14 November 2018