Aviation safety investigations & reports

Hydraulic involving a Fairchild Industries Inc SA227-DC, VH-HWR, Parkes, Aerodrome, NSW on 10 April 1998

Investigation number:
Status: Completed
Investigation completed


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The pilot advised Sydney Flight Service, that on departure from Parkes, his aircraft had experienced a hydraulic failure, which resulted in landing gear retraction problems. The pilot then requested a diversion to Sydney instead of his intended destination of Bathurst, advising that the landing gear would be lowered using the alternate system. The aircraft subsequently made a normal approach into Sydney for an uneventful landing. Investigation by company maintenance personnel could not fault the landing gear system, and put the problem down to air in the system. This aircraft was fitted with antiskid which is known to cause problems with hydraulic fluid loss. The operator was informed of other operator experience in this regard. Safety Action Statement As a result of this occurrence, the Bureau of Air Safety Investigation is currently analysing a possible safety deficiency. The deficiency identified involves aircraft fitted with antiskid braking systems. This braking option suffers from static internal leakage, which may result in the loss of hydraulic system contents and subsequent loss of all hydraulic services. Any recommendation issued as a result of this analysis will be published in the Bureau's Quarterly Safety Deficiency Report.
Download Final Report
[Download  PDF: 13KB]
General details
Date: 10 April 1998   Investigation status: Completed  
Time: 7:38 EST    
State: New South Wales   Occurrence type: Hydraulic  
Release date: 14 July 1998   Occurrence category: Incident  
Report status: Final    

Aircraft details

Aircraft details
Aircraft manufacturer Fairchild Industries Inc  
Aircraft model SA227-DC  
Aircraft registration VH-HWR  
Sector Turboprop  
Damage to aircraft Nil  
Departure point Parkes NSW  
Destination Bathurst NSW