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VH-EWS was departing from runway 16 at Sydney for Hamilton Island, followed shortly after by VH-YMK for Perth. The DEPARTURE Radar Controllers on duty at the Sydney Area Approach Control Centre (AACC), believed that a breakdown in the radar separation standard had occurred between the two aircraft shortly after take-off. The initial DEPARTURE instructions given to the Sydney Control Tower for VH-YMK were 'Cancel SID turn right heading 170 maintain 3 000'. The DEPARTURE sequence was subsequently changed twice with two aircraft VH-HVA and VH-EWS sequenced ahead of VH-YMK. Immediately following the issue of the final DEPARTURE instruction for VH-EWS, the instruction 'and YMK can be unrestricted' was passed by DEPARTUREs to the Tower. The Tower understood the instruction to mean cancel the previous DEPARTURE instruction, and the aircraft may now track via the cleared SID with no altitude restriction. The

Download Final Report
[ Download PDF: 22KB]
 
 
 
 
General details
Date: 13 July 1991 Investigation status: Completed 
Time: 935 Investigation type: Occurrence Investigation 
Location   (show map):Sydney  
State: New South Wales  
Release date: 16 October 1991 Occurrence category: Incident 
Report status: Final Highest injury level: None 
 
Aircraft 1 details
Aircraft manufacturer: Airbus Industrie 
Aircraft model: A300 
Aircraft registration: VH-YMK 
Serial number: E3197 
Type of operation: Air Transport High Capacity 
Damage to aircraft: Nil 
Departure point:Sydney NSW
Departure time:N/A
Destination:Hamilton Island QLD
Aircraft 2 details
Aircraft manufacturer: Airbus Industrie 
Aircraft model: A300 
Aircraft registration: VH-YMK 
Serial number: 556 
Type of operation: Air Transport High Capacity 
Damage to aircraft: Nil 
Departure point:Sydney NSW
Destination:Perth WA
 
 
 
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Last update 13 May 2014