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ASN Wikibase Occurrence # 161721
Last updated: 26 August 2021
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Date:28-OCT-2013
Time:15:20
Type:Silhouette image of generic AS55 model; specific model in this crash may look slightly different
Aérospatiale AS 355 Ecureuil II
Owner/operator:The Helicopter Line
Registration: ZK-IMJ
MSN: 9057
Fatalities:Fatalities: 0 / Occupants: 7
Other fatalities:0
Aircraft damage: Substantial
Category:Accident
Location:near Tyndall Glacier -   New Zealand
Phase: Landing
Nature:Passenger - Non-Scheduled/charter/Air Taxi
Departure airport:Queenstown Airport
Destination airport:near Tyndall Glacier
Investigating agency: TAIC New Zealand
Narrative:
On 28 October 2013 a party of 12 tourists was taken in two AS350 Squirrel helicopters (ZK-IMJ and ZK-HAE) operated by The Helicopter Line from Queenstown aerodrome to a snowfield approximately two kilometres southeast of Mount Tyndall in Otago province. The first helicopter (ZK-HAE) landed. The second helicopter (ZK-IMJ) was about to land but the pilot carried out a go-around. During the go-around the helicopter came close to colliding with the main rotors of the parked helicopter.

On the second approach the helicopter drifted towards the parked helicopter and its tail contacted the main rotor blades of the parked helicopter. The blades severed the lower vertical stabiliser and part of the tail rotor of the airborne helicopter. The rest of the tail rotor assembly and vertical stabiliser detached immediately.

The helicopter was uncontrollable without the tail rotor assembly. It spun rapidly a number of times before climbing slightly then crashing about 70 metres in front of the parked helicopter. The pilot received a serious injury and all of his passengers received minor injuries.

The Transport Accident Investigation Commission (Commission) found that blowing snow very likely contributed to the near collision during the go-around, but it was unable to determine the cause of the collision. The Commission made findings that excluded technical, helicopter performance and other environmental factors as causes of the collision. The possibility that the pilot misjudged his approach, causing the accident, could not be excluded. There was no evidence to suggest that the pilot had a medical condition that contributed to the accident, but that possibility could not be excluded.

The Commission identified the following safety issues during the inquiry:
- when pilots do not inform their flight-following organisations of changes to their routes or destinations, any search and rescue action that is required could be delayed or misdirected
- the widespread practice of allowing passengers to leave and return to a helicopter parked on snow while the rotors are turning is hazardous.

A recommendation was made to the Director of Civil Aviation that he ensure that helicopter operators who conduct snow landings address in their safety management systems the hazard of passenger disembarkation and embarkation during snow landings while the rotors are turning.

Upon landing, the helicopter crashed into a parked helicopter ZH-HAE. The pilot sustained serious injuries and 11 passengers (as it appears 6 passengers from this helicopter and 5 passengers from the parked helicopter) sustained minor injuries.

Sources:

https://taic.org.nz/inquiries?SkinSrc=[G]skins/taicAviation/skin_aviation
http://www.townsvillebulletin.com.au/news/breaking-news/pilot-passengers-hurt-in-nz-chopper-crash/story-fnjbnxoj-1226748426323
https://nz.news.yahoo.com/pilot-passengers-injured-in-chopper-crash-19580235.html
https://www.nzherald.co.nz/nz/news/article.cfm?c_id=1&objectid=11147913

Accident investigation:
cover
  
Investigating agency: TAIC New Zealand
Status: Investigation completed
Duration:
Download report: Final report
Safety recommendations:

Safety recommendation 009/17 issued 25 May 2017 by TAIC to CAA NZ


Revision history:

Date/timeContributorUpdates
28-Oct-2013 08:12 gerard57 Added
28-Oct-2013 19:19 gerard57 Updated [Aircraft type, Operator, Location, Source]
28-Oct-2013 19:20 harro Updated [Aircraft type]
28-Oct-2013 19:30 gerard57 Updated [Narrative]
28-Oct-2013 19:47 harro Updated [Time]
31-Oct-2013 04:58 Cedric3204 Updated [Registration, Cn, Source, Narrative]
23-May-2016 19:22 Aerossurance Updated [Aircraft type, Source]
23-Sep-2016 18:54 Aerossurance Updated [Aircraft type, Location, Nature]
29-Jul-2017 08:57 harro Updated [Location, Departure airport, Destination airport, Source, Narrative]

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