Aviation safety investigations & reports

Aircraft proximity event between a Cessna 172, VH-NUU and a Beech F33A, VH-ZBZ, Archerfield Airport, Qld, 7 October 2013

Investigation number:
AO-2013-175
Status: Completed
Investigation completed

Summary

Download Final Report
[Download  PDF: 203KB]
Alternate: [Download  DOCX: 513KB]
 

On the evening of 7 October 2013, the pilot of a Cessna 172 aircraft, registered VH‑NUU (NUU), commenced night circuits at Archerfield Airport, Queensland. He reported that there were also four other aircraft and a helicopter conducting night circuits at the time. The pilot reported that the aircraft in the circuit were flying a ‘modified’ due to a strong tailwind and to make allowances for a helicopter that had been conducting stop-and-go circuits.

At the same time, the pilot of a Beech F33A aircraft, registered VH‑ZBZ (ZBZ), inbound to Archerfield, was advised by air traffic control that there were four or five aircraft in the circuit area. ZBZ joined the circuit between an aircraft on downwind and another on upwind. The pilot of ZBZ reported that he had the aircraft in front of him (NUU) sighted on downwind and extended the downwind leg to maintain separation with NUU.

NUU turned onto base and about 20 seconds later, the pilot of ZBZ also broadcast that he was turning onto base. Soon after, the pilot of ZBZ broadcast that he was established on final. At that time, he had sighted an aircraft well ahead on late final and believed it was NUU. The pilot of NUU immediately broadcast that he was on final.

The pilot of ZBZ then saw NUU below his aircraft. The pilot of ZBZ conducted a go‑around and NUU continued the approach.

Airservices Australia surveillance data indicated that the vertical separation reduced to 300 ft.

Maintaining a vigilant lookout at all times and standardisation of the circuit pattern is important for safe operations in the vicinity of non-towered aerodromes.

 

Aviation Short Investigation Bulletin - Issue 25

Download Final Report
[Download  PDF: 203KB]
 
 
Alternate: [Download  DOCX: 513KB]
 
General details
Date: 07 October 2013   Investigation status: Completed  
Time: 1855 EST   Investigation level: Short - click for an explanation of investigation levels  
Location   (show map): Archerfield Airport    
State: Queensland   Occurrence type: Separation issue  
Release date: 20 January 2014   Occurrence category: Incident  
Report status: Final   Highest injury level: None  

Aircraft 1 details

Aircraft 1 details
Aircraft manufacturer Cessna Aircraft Company  
Aircraft model 172  
Aircraft registration VH-NUU  
Serial number 17280366  
Type of operation Flying Training  
Sector Piston  
Damage to aircraft Nil  
Departure point Archerfield, Qld  
Destination Archerfield, Qld  

Aircraft 2 details

Aircraft 2 details
Aircraft manufacturer Beech Aircraft Corp  
Aircraft model 33  
Aircraft registration VH-ZBZ  
Serial number CE-1200  
Type of operation Private  
Sector Piston  
Damage to aircraft Nil  
Departure point Hervey Bay, Qld  
Destination Archerfield, Qld  
Last update 14 November 2018