Aviation safety investigations & reports

Midair collision - Parafield Airport, SA, 7 February 2009, VH-TGM, Grob - Burkhaart Flugzeugbau G-115 Grob, VH-YTG, S.O.C.A.T.A. - Groupe Aerospatiale TB-10 Tobago

Investigation number:
AO-2009-005
Status: Completed
Investigation completed

Summary

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On 7 February 2009, five aircraft were engaged in circuit training and one aircraft was departing runway 03 left (03L) at Parafield Airport, SA. All of the aircraft in the circuit at the time were operated by a local flight school. The control tower was not open and Common Traffic Advisory Frequency - carriage and use of radio required, CTAF (R), procedures were in place.

At about 0736 Central Daylight-saving Time, a S.O.C.A.T.A.-Groupe Aerospatiale TB-10 (Tobago), registered VH-YTG, with an instructor and student on board, was on final approach for a practice short field landing. In the circuit behind the Tobago was a Grob - Burkhaart Flugzeugbau G-115 (Grob), registered VH-TGM, with an instructor and student on board. The Grob was on final approach for a practice flapless approach and landing. The Grob collided with the Tobago from behind, damaging the Tobago‟s rudder with the Grob‟s right wing. Both aircraft remained controllable and were landed on runway 03L and 03 right.

The investigation found that the pilots of the Grob experienced sun glare and background visual clutter on the base leg for runway 03L and were unable to sight the preceding Tobago. The pilots of the Grob did not discern some broadcasts from the Tobago pilots, significantly diminishing their situational awareness. The pilots of the Grob continued the approach without positively identifying the preceding aircraft in the circuit.

Soon after the accident, the aircraft operator's flight safety officer produced a comprehensive accident investigation report that captured the key aspects of the accident. Included in the report were a number of recommendations, which were implemented by the operator.

The investigation identified a safety issue regarding definition of the circuit traffic limit in CTAF(R) and a safety issue related to the positive identification of traffic before turning final.

Download Final Report
[Download  PDF: 947KB]
 
 
 
General details
Date: 07 February 2009   Investigation status: Completed  
Time: 0736 CSuT   Investigation level: Complex - click for an explanation of investigation levels  
Location   (show map): Parafield Aerodrome    
State: South Australia   Occurrence type: Airborne collision  
Release date: 07 July 2009   Occurrence class: Airspace  
Report status: Final   Occurrence category: Serious Incident  
  Highest injury level: Serious  

Aircraft 1 details

Aircraft 1 details
Aircraft manufacturer S.O.C.A.T.A.-Groupe Aerospatiale  
Aircraft model TB  
Aircraft registration VH-YTG  
Serial number 1407  
Type of operation Flying Training  
Damage to aircraft Minor  
Departure point Parafield SA  
Destination Parafield SA  
Crew details
Role Class of licence Hours on type Hours total
Pilot-in-Command ATPL 872 13800

Aircraft 2 details

Aircraft 2 details
Aircraft manufacturer Grob - Burkhart Flugzeugbau  
Aircraft model G115  
Aircraft registration VH-TGM  
Serial number 8070  
Type of operation Flying Training  
Damage to aircraft Minor  
Departure point Parafield SA  
Destination Parafield SA  
Crew details
Role Class of licence Hours on type Hours total
Pilot-in-Command Commercial 82 1000
Last update 14 November 2018