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On 1 July 1992, SAAB SF-340A, VH-EKT, was engaged on a scheduled passenger service from Melbourne, Victoria to Devonport, Tasmania. During the flight, the crew experienced difficulty in controlling the right propeller RPM. When the aircraft landed at Devonport, directional control was lost. The aircraft departed the runway and ran through a ditch in soft, muddy ground. The aircraft sustained substantial damage but there were no injuries to passengers or crew. The investigation revealed that a severe asymmetric thrust condition developed after landing when reverse thrust was selected but the right propeller remained at a positive blade angle. The report concludes that the right propeller control unit was defective, due to internal oil leakage across the feathering solenoid valve. As a result, the propeller failed to respond normally to pilot control input.
Download Final Report
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General details
Date: 01 July 1992 Investigation status: Completed 
Time: 1641 EST  
Location   (show map):Devonport Investigation type: Occurrence Investigation 
State: Tasmania Occurrence type: Loss of control 
Release date: 20 October 1994 Occurrence class: Operational 
Report status: Final Occurrence category: Accident 
 Highest injury level: None 
Aircraft details
Aircraft manufacturer: S.A.A.B. Aircraft Co 
Aircraft model: 340 
Aircraft registration: VH-EKT 
Serial number: 85 
Type of operation: Air Transport Low Capacity 
Damage to aircraft: Substantial 
Departure point:Melbourne, VIC
Destination:Devonport, TAS
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Last update 13 May 2014