Aviation safety investigations & reports

Socata MSTB20, VH-JTK, Piper PA44-180, VH-KFO, Adelaide SA, 17 April 1990

Investigation number:
Status: Completed
Investigation completed


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The PA-44 aircraft was cleared to take-off and given a clearance which included the instructions to maintain runway heading and to call Adelaide Approach airborne. At about the same time, the TB20 was approaching Adelaide at 2,000 feet from Parafield to conduct a practice Adelaide/Parafield non-directional beacon (NDB) approach, which uses the Adelaide NDB. The TB20 pilot was cleared to conduct the NDB approach. The PA-44 did not commence its take-off run until about 110 seconds after lining up and being issued with the clearance. During this period, Adelaide Approach East issued a restriction of 2,000 feet for the PA-44, which Tower passed on to the pilot. Once the PA-44 became airborne, Tower advised Approach East that Tower was able to co-ordinate the separation between both aircraft. Approach East then directed Tower to amend the PA-44 clearance to direct to Port Stanvac at 2,000 feet. Tower could not raise the PA-44 as the pilot had changed to Approach radio frequency as instructed. Approach East then reported that he had issued the revised clearance to the PA-44 pilot. Almost a minute passed before Tower advised Approach East that a conflict was rapidly developing between the PA-44 and the TB20. The TB20 pilot, on the outbound leg of the NDB, reported sighting the PA-44 at a distance of about 30 metres, level, on his right and tracking from right to left.

Download Final Report
[Download  PDF: 24KB]
General details
Date: 17 April 1990   Investigation status: Completed  
Time: 1454    
Location: Adelaide    
State: South Australia    
Release date: 03 June 1991   Occurrence category: Incident  
Report status: Final   Highest injury level: None  

Aircraft 1 details

Aircraft 1 details
Aircraft manufacturer S.O.C.A.T.A.-Groupe Aerospatiale  
Aircraft model TB  
Aircraft registration VH-JTL  
Serial number 423  
Type of operation Private  
Damage to aircraft Nil  
Departure point Parafield  
Departure time N/K  
Destination Parafield  

Aircraft 2 details

Aircraft 2 details
Aircraft manufacturer Piper Aircraft Corp  
Aircraft model PA-44  
Aircraft registration VH-KFO  
Serial number 447995208  
Type of operation Charter  
Damage to aircraft Nil  
Departure point Adelaide SA  
Departure time 0  
Destination Port Stanvac SA