Aviation safety investigations & reports

Piper PA 23, VH BOC, Camden Airport NSW, 18 April 1989

Investigation number:
Status: Completed
Investigation completed


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The pilot who was flying the aircraft occupied the left seat. He was being endorsed on type and it was his second flight in the aircraft. After DEPARTURE from Bankstown the aircraft was flown via the training area to Camden where it was intended to conduct circuit training. On the second circuit, the landing gear was reported to have extended normally and an indication of three green lights obtained. During the ground roll, following a normal landing, and before the instructor called for the pilot to continue with the touch-and-go, the right wing began to settle as the right main gear retracted. The instructor took control and brought the aircraft to a halt on the runway. Both the left main and nose gear legs remained fully extended. He said that he selected the gear lever to the down position when the right wing commenced to drop. An examination revealed the right main gear jack upper attachment had detached. It indicated the down side of the jack was pressurised whilst there was weight on the wheel and the overcentre lock was not made. This is consistent with the landing gear having been momentarily selected up during the landing roll and then selected down again. No mechanical defects were discovered during repairs to the aircraft which might have resulted in inadvertent gear retraction. The instructor had briefed the pilot under going training that he, the instructor would raise the flaps during the ground roll on touch-and-go landings. The PA 23 aircraft has the flap selector on the left side of the throttle quadrant and the landing gear selector on the right side; the reverse layout of most light aircraft equipped with retractable gear.

Download Final Report
[Download  PDF: 23KB]
General details
Date: 18 April 1989   Investigation status: Completed  
Time: 1358    
Location: Camden Airport    
State: New South Wales    
Release date: 08 December 1989   Occurrence category: Accident  
Report status: Final   Highest injury level: None  

Aircraft details

Aircraft details
Aircraft manufacturer Piper Aircraft Corp  
Aircraft model PA-23  
Aircraft registration VH-BOC  
Serial number 27 7854059  
Type of operation Flying Training  
Damage to aircraft Substantial  
Departure point Bankstown NSW  
Departure time 1330 approx.  
Destination Bankstown NSW