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The helicopter was on late final approach when the pilot attempted to open the throttle. The engine did not respond to the throttle movement and an autorotational descent was commenced. However, the rate of descent was not arrested and the aircraft landed heavily. An inspection of the aircraft found that the bolt attaching the throttle cable to the collective/throttle linkage was missing. The bolt and nut were later found on the floor of the aircraft between the seats. The helicopter had recently been stripped and repainted but during re-assembly a cotterpin was inadvertantly left out of the throttle control linkage. A subsequent periodic inspection failed to disclose the omission. The aircraft had completed appoximately 24 flight hours since that periodic inspection.

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General details
Date: 13 May 1987 Investigation status: Completed 
Time: 1148  
Location:Surfers Gardens (20 km NW Coolangatta) Investigation type: Occurrence Investigation 
State: Queensland  
Release date: 17 July 1987  
Report status: Final Occurrence category: Accident 
 Highest injury level: None 
Aircraft details
Aircraft manufacturer: Hughes Helicopters 
Aircraft model: 269 
Aircraft registration: VH-CHM 
Type of operation: Private 
Sector: Helicopter 
Damage to aircraft: Substantial 
Departure point:Casino NSW
Departure time:1148
Destination:Surfers Gardens QLD
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