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On 14 July 2007, a Boeing 737 NG, registered ZK-PBF, taxied at Sydney Airport on taxiway 'G' to runway 16R for a takeoff to Christchurch, New Zealand. The aircraft entered the runway with left engine N1 at 28% RPM and right engine N1 at 20% RPM (idle).

The flight crew commenced the takeoff by increasing both engines' thrust and the Take Off / Go Around (TO/GA) button was pressed with the left engine N1 at 41% RPM and the right engine N1 at 24% RPM. As both engines accelerated, asymmetric thrust reduced directional controllability of the aircraft and it veered off the side of the runway before the crew could bring the aircraft to a halt on the crossing runway 07.

As a result of this occurrence, the aircraft operator has reviewed procedures for initial and recurrent training of flight crews.

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General details
Date: 14 July 2007 Investigation status: Completed 
Time: 1848 EST  
Location   (show map):Sydney Investigation type: Occurrence Investigation 
State: New South Wales Occurrence type: Runway excursion 
Release date: 18 February 2009 Occurrence class: Operational 
Report status: Final Occurrence category: Serious Incident 
 Highest injury level: None 
Aircraft details
Aircraft manufacturer: The Boeing Company 
Aircraft model: 737 
Aircraft registration: ZK-PBF 
Serial number: 33799 
Type of operation: Air Transport High Capacity 
Damage to aircraft: Minor 
Departure point:Sydney, NSW
Departure time:1848 EST
Destination:Christchurch, NZ
Crew details
RoleClass of licenceHours on typeHours total
Co-Pilot/1st OfficerATPL4009000
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Last update 14 November 2018