Aviation safety investigations & reports

Piper PA28-235, VH-IMT, Mundabullangana WA, 21 January 1984

Investigation number:
Status: Completed
Investigation completed


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The aircraft had been parked in a hangar and not flown for six months until the day before the accident. After landing on that occasion the pilot noticed that the airspeed indication was slow to return to read zero. The next day the pilot believed the airspeed took longer than usual to reach the normal cruise indication. When on final, with an indicated airspeed of 80 kt the stall warning light illuminated, the aircraft stalled and struck the ground. Prior to the second flight the pilot had attempted to clear the pitot/static system by blowing into the pitot tube. Inspection of the static system found evidence of a blockage by an insect nest. The blockage was in such a position that it would not have been visible during a preflight inspection.

Download Final Report
[Download  PDF: 22KB]
General details
Date: 21 January 1984   Investigation status: Completed  
Time: 1130    
Location: Mundabullangana    
State: Western Australia   Occurrence type: Hard landing  
Release date: 25 September 1984   Occurrence category: Accident  
Report status: Final   Highest injury level: None  

Aircraft details

Aircraft details
Aircraft manufacturer Piper Aircraft Corp  
Aircraft model PA-28  
Aircraft registration VH-IMT  
Type of operation Aerial Work  
Damage to aircraft Substantial  
Departure point Mundabullangana WA  
Departure time 1000  
Destination Mundabullangana WA  
Last update 13 May 2014