Aviation safety investigations & reports

Wirestrike and collision with terrain involving Schweizer 269C, VH-NTZ, Deloraine, Tasmania, 20 July 2016

Investigation number:
AO-2016-081
Status: Completed
Investigation completed

Final Report

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On 20 July 2016, the pilot of a Schweizer 269C helicopter, registered VH-NTZ, conducted aerial spraying operations near Deloraine, Tasmania.

The pilot completed spraying one area, and prior to commencing spraying another, overflew it to assess the site. During that inspection, the pilot sighted two sets of powerlines, one running approximately north-south, and the other branching off to the east. Based on the location of the powerlines and the wind, which was a light northerly, the pilot elected to spray the paddock in an east-west direction. The helicopter was operating north of the powerline running east-west, and in each run, was overflying and remaining clear of the powerlines at the western end of the paddock.

At about 1230 Eastern Standard Time, after completing two spray loads, the pilot tracked south over the powerline and turned to conduct a tidy-up run to the north along the road and powerlines running north-south.

After overflying a dairy building, the helicopter descended as the pilot intended to commence spraying. However, the helicopter struck the powerlines running east-west and subsequently collided with terrain.

The pilot, who was the sole occupant of the helicopter, sustained serious injuries and the helicopter was destroyed.

The ATSB publication Avoidable Accidents No. 2 – Wirestrikes involving known wires: A manageable aerial agricultural hazard, explains strategies to help minimise the risk of striking wires while flying.

 

Aviation Short Investigations Bulletin- Issue 52

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General details
Date: 20 July 2016   Investigation status: Completed  
Time: 12:30 EST    
Location   (show map): Devonport Airport, SE 45 km (Deloraine)   Investigation type: Occurrence Investigation  
State: Tasmania   Occurrence type: Wirestrike  
Release date: 28 September 2016   Occurrence class: Operational  
Report status: Final   Occurrence category: Accident  
  Highest injury level: Serious  

Aircraft details

Aircraft details
Aircraft manufacturer Schweizer Aircraft Corp  
Aircraft model 269C  
Aircraft registration VH-NTZ  
Serial number S1405  
Type of operation Aerial Work  
Sector Piston  
Damage to aircraft Destroyed  
Departure point Unknown  
Last update 14 November 2018