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The ATSB is investigating a main rotor blade crack involving Robinson R22, VH-HPH, on 16 December 2016.

During aerial mustering, the pilot detected vibrations through the helicopter and conducted a precautionary landing. The post-flight inspection revealed a significant split on the rotor blade.

The investigation is continuing.

General details
Date: 16 December 2016 Investigation status: Active 
Time: 09:30 CST Investigation phase: Examination and analysis 
Location   (show map):Labelle Downs (ALA) Investigation type: Occurrence Investigation 
State: Northern Territory Occurrence type: Propeller/rotor malfunction 
Report status: Pending Occurrence category: Accident 
Anticipated completion: 1st Quarter 2019 Highest injury level: None 
Aircraft details
Aircraft manufacturer: Robinson Helicopter Co 
Aircraft model: R22 
Aircraft registration: VH-HPH 
Serial number: 3988 
Type of operation: Aerial Work 
Sector: Helicopter 
Damage to aircraft: Nil 
Departure point:Labelle Downs (ALA)
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Last update 14 November 2018