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Preliminary investigation was undertaken into a category 4 occurrence involving a TCAS alert on a de Havilland Dash 8 aircraft about a Beechcraft King Air aircraft near Essendon Airport. The ATSB has terminated the investigation based on information from the pilot of the King Air that he diverted his attention during the climb and did not adequately monitor the aircraft's altitude following the departure. There was relatively little safety benefit to be gained from continuing the investigation compared with other priorities.

Status: Downgraded the occurrence to category 5 and investigation discontinued.

General details
Date: 24 August 2004 Investigation status: Discontinued 
Time: 0839 EST  
Location   (show map):7 km E Essendon, (NDB) Investigation type: Occurrence Investigation 
State: Victoria Occurrence type: Loss of separation 
Release date: 24 June 2004 Occurrence class: Airspace 
Report status: Discontinued Occurrence category: Incident 
 Highest injury level: None 
Aircraft 1 details
Aircraft manufacturer: Beech Aircraft Corp 
Aircraft model: 200 
Aircraft registration: VH-ITH 
Type of operation: Charter 
Damage to aircraft: Nil 
Aircraft 2 details
Aircraft manufacturer: de Havilland Canada 
Aircraft model: DHC-8 
Aircraft registration: VH-TQX 
Type of operation: Air Transport Low Capacity 
Damage to aircraft: Nil 
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Last update 30 May 2014