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The pilot had intended to conduct a night freight service to Emerald. There were several thunderstorms in the Emerald area and the pilot elected to divert to Blackwater, 70 kilometres to the east. On arrival in the Blackwater area, the pilot report that he commenced holding at an altitude about 1700 feet above ground level, while he waited for the runway lights to be displayed. The aircraft then entered cloud and severe turbulence was encountered. The pilot stated that his headset was thrown from his head and that he accidently knocked the gear lever into the down position. He said he made no further control inputs. The aircraft struck the ground in a 40 degree turn to the right, at a shallow angle of descent, about 250 metres to the east of the Blackwater runway. The aircraft rotated to the right and slid for about 150 metrtes before coming to rest. The maingear, right engine, aileron and both flaps had been torn from the aircraft during the impact sequence. Reports from ground witnesses indicate that the aircraft was being flown at an altitude of about 400 feet above ground level. It was established that there were thunderstorms in the area at the time but it was not possible to confirm the pilot's report of their severity. The damage to the aircraft suggests that contact with the ground was at a relatively low rate of descent. The investigation did not determine the cause of the accident.

Download Final Report
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General details
Date: 04 December 1985 Investigation status: Completed 
Time: 55 Investigation type: Occurrence Investigation 
Location:Blackwater  
State: Queensland Occurrence class: Operational 
Release date: 06 February 1987 Occurrence category: Accident 
Report status: Final Highest injury level: Minor 
 
Aircraft details
Aircraft manufacturer: Piper Aircraft Corp 
Aircraft model: PA-23 
Aircraft registration: VH-MMZ 
Type of operation: Charter 
Damage to aircraft: Substantial 
Departure point:Brisbane QLD
Departure time:0055
Destination:Emerald QLD
 
 
 
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