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The helicopter was being operated at about 40 feet above ground level at an indicated airspeed of 45 knots, when the engine suddenly failed. During the subsequent landing attempt the main and tail rotors struck trees and the helicopter contacted the ground tail first, severing the tail skid and tail rotor blades. Inspection of the engine revealed that the carburettor air filter screen was blocked by dirt and the alternate air source door had been glued in the shut position.

Download Final Report
[ Download PDF: 22KB]
General details
Date: 24 June 1986 Investigation status: Completed 
Time: 1600  
Location:5km West of Ban Ban Springs Investigation type: Occurrence Investigation 
State: Northern Territory  
Release date: 12 May 1987  
Report status: Final Occurrence category: Accident 
 Highest injury level: None 
Aircraft details
Aircraft manufacturer: Hughes Helicopters 
Aircraft model: 269 
Aircraft registration: VH-ACD 
Type of operation: Aerial Work 
Sector: Helicopter 
Damage to aircraft: Substantial 
Departure point:Ban Ban Springs NT
Departure time:1600
Destination:Ban Ban Springs NT
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