Aviation safety investigations & reports

Runway excursion - Taylorcraft BC12-D, VH-PEE, near Gunnedah Airport, NSW, 5 December 2011

Investigation number:
Status: Completed
Investigation completed


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On 5 December 2011, at about 1030 EDT a Taylorcraft model BC12-D aircraft, registered VH-PEE, was engaged in taxi trails as part of a pre-flight inspection for a flight scheduled late in the day. The pilot reported that, while using a grass runway, 26 km to the south-east of Gunnedah Aerodrome, NSW the aircraft was struck by a strong wind gust or Willy-willy and, on attempting to correct with engine power and right rudder, the aircraft veered off of the runway. He was unable to regain control and the aircraft subsequently struck a fence on the northern side of the runway and flipped over, coming to rest inverted. There were no injuries to the pilot. The aircraft incurred serious damage which included damage to the propeller, one wing strut and the wing surfaces.

Past studies have indicated that Willy-willies are unseen, unpredictable and can adversely affect light aircraft and helicopters when they are operating on or close to the ground. Pilots must be vigilant when operating in these areas and be prepared to react to mitigate the effects of Willy-willies and maintain control of the aircraft.

Download Final report
[Download  PDF: 4.43MB]
General details
Date: 05 December 2011   Investigation status: Completed  
Time: 1000 ESuT   Investigation level: Short - click for an explanation of investigation levels  
Location   (show map): 26 km south-east of Gunnedah    
State: New South Wales   Occurrence type: Runway excursion  
Release date: 14 March 2012   Occurrence category: Accident  
Report status: Final   Highest injury level: None  

Aircraft details

Aircraft details
Aircraft manufacturer Taylorcraft - Robert J Kuhlow  
Aircraft model BC12  
Aircraft registration VH-PEE  
Serial number 8256  
Type of operation Private  
Damage to aircraft Serious  
Destination Gunnedah, NSW  
Last update 14 November 2018