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The aircraft was given a requirement to reach FL310 by a specified time (43) in order to gain separation from opposite direction traffic at FL290. After the specified time (at 44) the pilot reported that he was unable to reach FL310 and was unable to maintain FL300. The aircraft was given immediate descent to FL270. Shortly afterwards the pilot advised that he was able to climb to FL310. A procedural breakdown in separation with the opposite direction traffic occurred. The crew reported that they had maintained the climb rate using the vertical speed of the aircraft autopilot. This had caused the airspeed to decay because the climb performance of the aircraft was unable to sustain the climb rate demanded. It then became necessary for the aircraft to descend in order to regain its speed and performance.
Download Final Report
[ Download PDF: 12KB]
 
 
 
 
General details
Date: 17 December 1992 Investigation status: Completed 
Time: 16:45 EST Investigation type: Occurrence Investigation 
 Occurrence type:Loss of separation 
 Occurrence class: Airspace 
Release date: 17 October 1996 Occurrence category: Incident 
Report status: Final  
 
Aircraft 1 details
Aircraft manufacturer: Fokker B.V. 
Aircraft model: F28 MK 4000 
Aircraft registration: VH-EWB 
Sector: Jet 
Damage to aircraft: Nil 
Departure point:Mt Isa QLD
Destination:Brisbane QLD
Aircraft 2 details
Aircraft manufacturer: McDonnell Douglas Corp. 
Aircraft model: DC-10 
Aircraft registration: 9M-MAS 
Sector: Other 
Departure point:Brisbane QLD
Destination:Kuala Lumpur Malaysia
 
 
 
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Last update 07 July 2015