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The ATSB is investigating a hard landing involving Robinson R44, VH-LGN, at Channel Point, Northern Territory, on 18 August 2017.

Passing 500 ft in a descending turn at approximately 50 kt, the pilot reported the helicopter began to vibrate. The pilot was unable to stop the vibration and conducted a precautionary landing. The helicopter landed hard and severed the tail boom. The helicopter sustained substantial damage and the pilot and three passengers were not injured.

As part of the investigation, the ATSB will interview the pilot, obtain an engineering report and gather additional information.

A report will be released within several months.

General details
Date: 18 August 2017 Investigation status: Active 
Time: 14:00 CST Investigation type: Occurrence Investigation 
Location   (show map):Darwin Airport, SW 117 km (Channel Point) Occurrence type:Hard landing 
State: Northern Territory Occurrence class: Operational 
 Occurrence category: Accident 
Report status: Pending Highest injury level: None 
Expected completion: December 2017  
Aircraft details
Aircraft manufacturer: Robinson Helicopter Co 
Aircraft model: R44 II 
Aircraft registration: VH-LGN 
Serial number: 12052 
Operator: Hilibrook Pty Ltd 
Type of operation: Private 
Sector: Helicopter 
Damage to aircraft: Substantial 
Departure point:Darwin, NT
Destination:Channel Point, NT
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Last update 02 November 2017