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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 type: Occurrence Investigation 
Location   (show map):Darwin Airport Occurrence type:Aircraft preparation 
State: Northern Territory Occurrence class: Operational 
Release date: 12 December 2011 Occurrence category: Incident 
Report status: Final Highest injury level: None 
 
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
 
 
 
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Last update 01 March 2016