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On 7 January 2013 at 0900 Eastern Daylight-saving Time a Piper PA28, registered VH-JXR, departed Mangalore Airport, Victoria on a navigation training exercise. The student pilot was the only person on board. 

An instructor on the ground watched the aircraft depart and observed an object trailing behind the aircraft following the takeoff. During a low-level pass, the right main wheel and inner cylinder of the oleo assembly were observed to have detached from the upper cylinder and to be hanging off the brake line. After a second low level pass, it was observed that the wheel had completely detached.

The instructor advised the student to hold over the airfield to burn off fuel and allow time for a plan to be formulated. After several hours and with emergency services in attendance the student was instructed to make a normal approach to runway 36. The aircraft touched down on the runway and slid off to the side coming to rest on the grass. The student was uninjured; however, the aircraft was substantially damaged.     

The examination of the right landing gear assembly revealed that the lower torque link attachment bolt had fractured allowing the inner cylinder to become detached from the torque link and to fall from the outer cylinder when the aircraft became airborne. The examination indicated that the failure of the bolt was due to single-point bending fatigue due to asymmetrical loading i.e. bending from one side.

Since this incident, the aircraft operator has undertaken to replace all torque link attachment bolts during the next scheduled maintenance on any Piper PA-28 aircraft they operate. The operator also advised that they will be treating all landings where a sideways load may have occurred with caution.

 

Aviation Short Investigation Bulletin Issue 20

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General details
Date: 07 January 2013 Investigation status: Completed 
Time: 0900 EDT  
Location   (show map):Mangalore Airport Investigation type: Occurrence Investigation 
State: Victoria Occurrence type: Landing gear/indication 
Release date: 28 June 2013 Occurrence class: Technical 
Report status: Final Occurrence category: Accident 
 Highest injury level: None 
 
Aircraft details
Aircraft manufacturer: Piper Aircraft Corp 
Aircraft model: PA-28 
Aircraft registration: VH-JXR 
Serial number: 28-7515185 
Type of operation: Flying Training 
Damage to aircraft: Substantial 
Departure point:Mangalore, Vic
Destination:Mangalore, Vic
 
 
 
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Last update 06 June 2014