Aviation safety issues and actions

Flight crew operating manual procedure for Vref40 check

Issue number: AO-2014-162-SI-01
Who it affects: All Qantas Boeing 737 pilots
Issue owner: Qantas Airways Ltd
Transport function: Aviation: Air transport
Background: Investigation Report AO-2014-162
Issue release date: 16 November 2015
Current issue status: Adequately addressed
Issue status justification:

The action by Qantas provides an additional defence to address the risk associated with this safety issue. 

Safety issue description

The Flight Crew Operating Manual procedure for crew comparison of the calculated Vref40 speed, while designed to assist in identifying a data entry error, could be misinterpreted, thereby negating the effectiveness of the check.

Proactive Action

Action number: AO-2014-162-NSA-004
Action organisation: Qantas Airways Ltd
Date: 16 November 2015
Action status: Closed

Qantas Airways Ltd. (Qantas) has advised that the Central Display Unit pre-flight procedure has been modified as follows. After the take-off data has been verified and compared by both flight crew, they are to check the ‘APPROACH REF’ page and verify the Vref40 speed.

Last update 10 March 2016