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The pilot of VH-LLY was cleared for descent in Darwin controlled airspace from FL330 to 5,000 ft, on a heading of 085, for radar vectoring to the ILS. VH-JPW had departed Darwin, and the pilot was cleared for climb to FL330, on a heading of 163. During descent, as VH-LLY was passing through 8,000 ft with a 3,000 ft per minute rate of descent, the pilot heard Darwin Approach advise the pilot of VH-JPW of unidentified traffic in his 2 o'clock position, and to maintain 6,000 ft until clear. He looked out and sighted another aircraft rapidly approaching, and realised that he must be the unidentified traffic. He resumed control from the co-pilot, made an immediate left turn and passed behind the other aircraft, with an estimated separation distance of 200m. He then contacted the pilot of VH-JPW and Darwin Approach to advise them of the occurrence. The pilot of VH-JPW believed that if he had not maintained climb power when he levelled at 6,000ft, the passing distance would have probably been much less. The Darwin Approach Controller admitted to misidentifying VH-LLY, contributing to the breakdown in separation standard.
Download Final Report
[ Download PDF: 15KB]
 
 
 
 
General details
Date: 31 October 1994 Investigation status: Completed 
Time: 18:30 CST Investigation type: Occurrence Investigation 
 Occurrence type:Loss of separation 
 Occurrence class: Airspace 
Release date: 23 August 1996 Occurrence category: Incident 
Report status: Final  
 
Aircraft 1 details
Aircraft manufacturer: Israel Aircraft Industries Ltd 
Aircraft model: 1124 
Aircraft registration: VH-JPW 
Sector: Jet 
Damage to aircraft: Nil 
Departure point:Darwin NT
Destination:Alice Springs NT
Aircraft 2 details
Aircraft manufacturer: Israel Aircraft Industries Ltd 
Aircraft model: 1124 
Aircraft registration: VH-LLY 
Sector: Jet 
Damage to aircraft: Nil 
Departure point:Darwin NT
Destination:Darwin NT
 
 
 
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Last update 21 October 2014