Matt Wright, Neil Mellon and Michael Burbidge will appear in Darwin Local Court on Thursday at 10am local time.
The trio have been charged in the investigation into the helicopter crash that killed Chris “Willow” Wilson.
Wright is charged with attempting to obstruct justice, destroying evidence, fabricating evidence, trespassing, trespassing, making false statements and interfering with a witness in a criminal investigation or trial by threat/retaliation.
Mellon is charged with 32 offenses, including attempting to pervert the course of justice, theft of data and unlawful access to data.
His charges also include weapons, firearms and wildlife crimes, as well as the alleged destruction of evidence related to the major disaster investigation.
Burbidge was charged with destruction of evidence, conspiracy and attempting to pervert the course of justice, and making false statements.
The trio will appear in court on Thursday for a preliminary examination application, which is expected to last until Friday.
The hearing will determine whether the case goes to the North Carolina Supreme Court.
