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Due to crossing traffic at flight level 180 the pilot of N103GC was asked if the aircraft could reach flight level 190 by 25 miles from Canberra. The pilot said this could not be done and air traffic control told the pilot to maintain flight level 170. During the climb the controller observed the mode C read out increase above flight level 170. The pilot was told to maintain flight level 170 but the level read out increased to flight level 176 before decreasing back to flight level 170. N103GC passed three to four miles behind the other aircraft, VH-TCH. Significant Factors The following factors were considered relevant to the development of the incident: 1. The pilot did not comply with the level restriction. 2. The precise reason for this happening was not determined.
Download Final Report
[ Download PDF: 15KB]
General details
Date: 03 March 1995 Investigation status: Completed 
Time: 16:40 ESuT  
 Investigation type: Occurrence Investigation 
 Occurrence type: Operational non-compliance 
Release date: 09 June 1995 Occurrence class: Airspace 
Report status: Final Occurrence category: Incident 
Aircraft 1 details
Aircraft manufacturer: Gulfstream Aerospace Corp 
Aircraft model: Gulfstream III 
Aircraft registration: N103GC 
Sector: Other 
Damage to aircraft: Nil 
Departure point:Canberra ACT
Destination:Williamtown NSW
Aircraft 2 details
Aircraft manufacturer: S.A.A.B. Aircraft Co 
Aircraft model: SF-340B 
Aircraft registration: VH-TCH 
Sector: Turboprop 
Damage to aircraft: Nil 
Departure point:Sydney NSW
Destination:Wagga NSW
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Last update 21 October 2014