Aviation safety investigations & reports

Technical assistance to the TAIC - Depressurisation event involving Boeing 737-300, ZK-NGI on 30 August 2013

Investigation number:
Status: Completed
Investigation completed


On 30 August 2013, a Boeing 737 aircraft, registered ZK-NGI, was involved in a cabin depressurisation incident near Auckland, New Zealand.

An investigation into the circumstances of this incident is being conducted by the Transport Accident Investigation Commission (TAIC) of New Zealand. The TAIC investigation reference is 13-008 / AO‑2013-008.

TAIC requested assistance from the Australian Transport Safety Bureau (ATSB) in the download of the aircraft’s cockpit voice recorder (CVR). To facilitate this support and to provide the appropriate protections for the CVR information, the ATSB appointed an accredited representative in accordance with paragraph 5.23 of ICAO Annex 13 and commenced an investigation under the Australian Transport Safety Investigation Act 2003.

The CVR was hand-carried to the ATSB’s facilities in Canberra by a TAIC officer and was downloaded on 5 September 2013. The downloaded audio and a replay report were provided to TAIC.

TAIC is responsible for releasing the final investigation report regarding this incident.




Released in accordance with section 25 of the Transport Safety Investigation Act 2003.


General details
Date: 29 August 2013   Investigation status: Completed  
Time: 2019 UTC   Investigation level: Defined - click for an explanation of investigation levels  
Location   (show map): South of Auckland, New Zealand    
State: International   Occurrence type: Air/pressurisation  
Release date: 24 October 2013   Occurrence category: Serious Incident  
Report status: Final   Highest injury level: None  

Aircraft details

Aircraft details
Aircraft manufacturer The Boeing Company  
Aircraft model 737-300  
Aircraft registration ZK-NGI  
Operator Air New Zealand  
Type of operation Air Transport High Capacity  
Sector Jet  
Damage to aircraft Nil  
Departure point Wellington, NZ  
Destination Auckland, NZ  
Last update 14 November 2018