Aviation safety investigations & reports

Collision with terrain involving Robinson helicopter VH-ZZM, 115 km W Rockhampton Airport Qld on 12 July 2014

Investigation number:
AO-2014-126
Status: Completed
Investigation completed

Summary

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On 12 July 2014, a pilot was undergoing training for mustering approval by a supervising pilot in a Robinson R22 helicopter, registered VH-ZZM. After completing about 7 hours of mustering, the helicopter was returning to a homestead near Dingo, Queensland, when about 1,000 ft above ground level (AGL) the supervising pilot instructed the pilot to conduct a practice autorotation  turning through 180°, which the pilot completed, increasing power when at about 5 ft AGL.

 During the subsequent climb, when at about 450 ft AGL, the supervising pilot took control of the helicopter and initiated a second autorotation. The supervising pilot initially observed the airspeed at about 65 kt, the rotor rpm in the green arc and the autorotation ‘looking good’, and assumed at this stage that he had handed control of the helicopter to the other pilot. At about 100 ft AGL, the pilot detected the rotor rpm decaying and a rapid rate of descent, but still assumed that the supervising pilot had control of the helicopter. When at about 20-40 ft AGL, the supervising pilot observed the vertical speed increasing and the rotor rpm decreasing and rapidly lowered the collective and increased the throttle. Just prior to the helicopter contacting the ground, the supervising pilot flared then levelled the helicopter and raised the collective.

The helicopter landed hard, bounced once and rotated through about 180° before coming to rest. The pilot sustained serious injuries and the supervising pilot minor injuries. The helicopter was substantially damaged.

This incident highlights the importance of good communication between a flight instructor and their student and the use of handover/takeover techniques to clarify who has control of the aircraft at any time.

 

Aviation Short Investigations Bulletin - Issue 34

Download Final Report
[Download  PDF: 125KB]
 
 
Alternate: [Download  DOCX: 532KB]
 

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General details
Date: 12 July 2014   Investigation status: Completed  
Time: 1513 EST   Investigation level: Short - click for an explanation of investigation levels  
Location   (show map): 115 km W Rockhampton Airport    
State: Queensland   Occurrence type: Collision with terrain  
Release date: 03 September 2014   Occurrence class: Operational  
Report status: Final   Occurrence category: Accident  
  Highest injury level: Serious  

Aircraft details

Aircraft details
Aircraft manufacturer Robinson Helicopter Co  
Aircraft model R22 BETA  
Aircraft registration VH-ZZM  
Serial number 3499  
Type of operation Flying Training  
Sector Helicopter  
Damage to aircraft Substantial  
Destination Alsace Station, Qld  
Last update 14 November 2018