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| Date: | Saturday 18 November 2017 |
| Time: | 09:24 |
| Type: |  Boeing 777-319ER |
| Owner/operator: | Air New Zealand |
| Registration: | ZK-OKN |
| MSN: | 38406/911 |
| Year of manufacture: | 2011 |
| Engine model: | General Electric GE90-115B |
| Fatalities: | Fatalities: 0 / Occupants: |
| Other fatalities: | 0 |
| Aircraft damage: | None |
| Category: | Incident |
| Location: | SSW of Brisbane International Airport, QLD (BNE/YBBN) -
 Australia
|
| Phase: | Approach |
| Nature: | Passenger - Scheduled |
| Departure airport: | Auckland International Airport (AKL/NZAA) |
| Brisbane International Airport, QLD (BNE/YBBN) | |
| Investigating agency: | ATSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
Air New Zealand flight NZ135 was involved in a descent below minimum altitude on approach to Brisbane International Airport, Australia.
The aircraft, a Boeing 777-319ER, was tracking via the SAVER 1A STAR for runway 01 at Brisbane Airport and the flight crew were cleared to descend to 3,000 ft. Shortly after the aircraft was observed to have descended to 2,500 ft. The flight crew were alerted to the error, but the aircraft continued descent to about 2,000 ft.
Weather around the time of the incident (09:24 LT / 23:24Z, 17 Dec):
YBBN 172300Z 03011KT 9999 -SHRA FEW011 SCT015 BKN034 20/18 Q1017 INTER 2300/0200 3000 SHRA BKN012 BKN025
YBBN 180000Z 01011KT 300V010 9999 -SHRA FEW012 SCT032 BKN050 20/18 Q1017 RESHRA INTER 0000/0300 3000 SHRA BKN012 BKN025
Sources:
https://www.atsb.gov.au/publications/investigation_reports/2017/aair/ao-2017-113/
https://www.flightradar24.com/data/aircraft/zk-okn#f903ab0
History of this aircraft
Other occurrences involving this aircraft
| 27 January 2023 | ZK-OKN | Air New Zealand | 0 | Auckland International Airport (AKL/NZAA) |  |
min |
| 21 May 2025 | ZK-OKN | Air New Zealand | 0 | Brisbane International Airport, QLD (BNE/YBBN) | |
min |
| Collision with Ground support equipment | ||||||
Location
Images:
Auckland International 8Jul2013
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 24-Nov-2017 10:07 | Petropavlovsk | Added |
| 24-Nov-2017 10:10 | harro | Updated [Aircraft type, Cn, Total fatalities, Other fatalities, Nature, Source, Narrative, ] |
| 24-Nov-2017 18:28 | harro | Updated [Location, Departure airport, Destination airport, Source, Narrative, Photo, ] |
| 24-Nov-2017 18:28 | harro | Updated [Photo, ] |
| 24-Nov-2017 18:39 | harro | Updated [Narrative, ] |
| 19-Dec-2017 07:35 | flyernzl | Updated [Photo, ] |
Corrections or additions? ... Edit this accident description
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