Aviation safety issues and actions

Air traffic control procedures at Williamtown

Issue number: AO-2011-011-SI-03
Who it affects: All RAAF Base Williamtown based Department of Defence air traffic controllers
Issue owner: Department of Defence
Transport function: Aviation: Airspace management
Background: Investigation Report AO-2011-011
Issue release date: 07 March 2012
Current issue status: Adequately addressed
Issue status justification:

Safety Action addressed the identified issue

Safety issue description

The Williamtown air traffic control procedures did not clearly define the separation responsibilities and coordination requirements between the Approach sectors for departing aircraft.

Proactive Action

Action number: AO-2011-011-NSA-009
Action organisation: Department of Defence
Date: 07 March 2012
Action status: Closed

Post incident, local procedures were reviewed at Williamtown with the following pertinent changes made:

• The entry of silent coordination in label data to be differentiated between intended tracking and actual tracking;

• Handoffs to be defined as 'clean handoffs' unless otherwise coordinated; and

• Mandated voice coordination of crossing-track conflictions prior to the relaxation of vertical separation.

Local procedures at Williamtown continue to be under constant and regular review.

ATSB comment:

DoD's safety action is appropriate, in amending the issues with the local procedures that were identified in this investigation.

Last update 30 January 2014