Aviation safety investigations & reports

Landing gear collapse involving a Hawker Beechcraft G58, VH-OMS, at Toowoomba Airport, Qld on 3 April 2013

Investigation number:
Status: Completed
Investigation completed


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Shortly after take-off, as the landing gear retracted, the crew heard a loud bang. The crew detected a potential issue with the landing gear, and began troubleshooting the problem. The crew noted that the red landing gear transit warning light had remained illuminated. They cycled the landing gear on several occasions, which resulted in the green main landing gear down indicator lights illuminating, but not the nose landing gear (NLG) light. The transit light also remained illuminated. 

The aircraft arrived at Toowoomba, Queensland and a pass over the runway confirmed that the NLG had extended, but was not in the locked position. The crew then referenced the wheels up landing procedure and formulated a plan.

During the subsequent landing, the aircraft’s nose lowered and slid along the runway. The aircraft came to a stop and the crew exited.

An examination of the aircraft determined that the rod end on the NLG forward retract rod assembly had separated from the plunger tube on the NLG plunger assembly. The affected components were further examined by the aircraft manufacturer who determined that copper braze had not been placed inside the plunger tube before the rod end had been inserted during the manufacturing process, which was conducted by an external supplier. 

As a result of this occurrence, the aircraft manufacturer released a Mandatory Service Bulletin for the inspection, and if necessary, replacement of the affected plunger assemblies. They further advised the ATSB that the manufacture of the plunger assembly will now be conducted in‑house, and that they are reviewing all braze process specifications and other brazed components manufactured by the external supplier.

While the crew were faced with an unfortunate situation, this accident highlighted the benefits of using time to your advantage. The crew took the time to formulate a strategy for the landing, assigned responsibilities to each crew member, and then rehearsed the plan. This ensured that they were well prepared and ended in a safe outcome.


Aviation Short investigation Bulletin Issue 21

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General details
Date: 03 April 2013   Investigation status: Completed  
Time: 11:10 EST   Investigation level: Short - click for an explanation of investigation levels  
Location   (show map): Toowoomba Airport    
State: Queensland   Occurrence type: Landing gear/indication  
Release date: 07 August 2013   Occurrence category: Accident  
Report status: Final   Highest injury level: None  

Aircraft details

Aircraft details
Aircraft manufacturer Hawker Beechcraft Corporation  
Aircraft model 58  
Aircraft registration VH-OMS  
Serial number TH-2347  
Type of operation Business  
Damage to aircraft Substantial  
Departure point Hervey Bay, Qld  
Destination Toowoomba, Qld  
Last update 14 November 2018