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On the 6 August 2017, an Airbus A320, registered VH-VGY, operated by Jetstar Airways, was flying between Wellington and Christchurch in New Zealand.

Air traffic control had cleared the flight for a published arrival procedure followed by an instrument approach. During the arrival procedure prior to commencing the instrument approach, the aircraft descended 1,000 feet below the published altitude on the arrival procedure. Air traffic control noticed the descent below the arrival procedure altitude but did not alert the flight crew at the time. The flight crew had not been aware that their aircraft had descended below the arrival procedure altitude. Initial indications are that no terrain warning was generated by the air traffic control radar system or on the aircraft, nor did the aircraft descend below the segment minimum safe altitude published on the arrival procedure.

The investigation AO-2017-007, conducted by the Transport Accident Investigation Commission in New Zealand, is continuing.

 
General details
Date: 06 August 2017 Investigation status: Active 
Time: 0700 UTC  
Location   (show map):near Christchurch, NZ Investigation type: External Investigation 
State: International Occurrence type: Flight below minimum altitude 
 Occurrence class: Operational 
Report status: Pending Occurrence category: Incident 
Anticipated completion: 1st Quarter 2019 Highest injury level: None 
 
Aircraft details
Aircraft manufacturer: Airbus 
Aircraft model: A320-232 
Aircraft registration: VH-VGY 
Operator: Jetstar Airways 
Type of operation: Air Transport High Capacity 
Sector: Jet 
Damage to aircraft: Nil 
Departure point:Wellington, NZ
Destination:Christchurch, NZ
 
 
 
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Last update 11 July 2018