Implement and make operational use of the Area Proximity Warning (APW) ground based safety tool in En-Route airspace, applicable TMAs and Military ATC units providing surveillance services.
Area Proximity Warning (APW) is a ground based safety net which uses surveillance data and flight path prediction to warn the controller when an aircraft is, or is predicted to be, flying into a volume of notified airspace, such as controlled airspace, danger areas, prohibited areas and restricted areas. APW is intended to function in the short term
Terrain and traffic characteristics can lead to a significant safety risk that can be mitigated by this tool.
An explanation of the difference between Level 1 and 2 is described below.
Before starting first operations, air traffic controllers must receive training, aimed at creating an appropriate level of trust in the concerned safety net. The time-criticality of alerts and the need for immediate attention or action must be well understood, but also the situations in which safety nets are less effective.
Safety nets performance must be monitored and regularly analysed, not only to improve the safety nets but also to identify other safety improvement opportunities. For example, "hot spots" could be identified and removed by making changes to airspace structure or procedures.
In order to avoid the "Cry Wolf" syndrome, the number of nuisance and false alerts must be reduced to a minimum. Air traffic controllers should be encouraged to report unexpected and unwanted safety nets behaviour and feedback should always be provided.
NOTE FOR MILITARY AUTHORITIES: It is the responsibility of each Military Authority to review this Objective IN ITS ENTIRETY and address each of the SLoAs that the Military Authority considers RELEVANT for itself. This has to be done on top and above of the review of "MIL" SLoAs which identify actions EXCLUSIVE to MIL Authorities.
Military ATC authorities are invited to consider implementation of APW level 2 when providing ATS surveillance services to GAT
Existing draft EUROCONTROL Specification for APW could be used as guidance material (ref. supporting material of individual SLoAs)
|CM-0801||Ground Based Safety Nets (TMA, En-Route)||31-12-2006||31-12-2010|
|REG01||Approve EUROCONTROL Specification for APW||DELETED|
|ASP01||Implement the APW function||
|ASP02||Align ATCO training with the use of APW ground-based safety tools||
|INT01||Amend ICAO documentation if required||DELETED|
|AGY01||Produce EUROCONTROL Specification for APW and related guidance material||DELETED|
EUROCONTROL - GUID-125 - EUROCONTROL Guidance Material for Area Proximity Warning - Edition 1.0 / 05/2009
EUROCONTROL - Safety Nets - A guide for ensuring effectiveness - August 2017