Post implementation review of the Australian Backup Navigation Network

Airservices is seeking feedback from aircraft operators on the use and effectiveness of the Australian Backup Navigation Network (BNN).

Purpose

In 2016, the Civil Aviation Safety Authority (CASA) mandated the use of Global Navigation Satellite System (GNSS) as the primary means of instrument flight rules (IFR) navigation in Australia.

With the reduced reliance on ground-based navigation aids (navaids) as a result, a number of navaids were subsequently decommissioned. The remaining navaid network formed the Backup Navigation Network (BNN), consisting of over 200 navaids at 124 airports across Australia.

The BNN is maintained and monitored by Airservices to support a GNSS contingency mode of operation, in the unexpected case where a pilot is unable to access the GNSS service.

As part of a post implementation review (PIR), Airservices is seeking feedback from aircraft operators on the use and effectiveness of the BNN, via an online survey published on the Engage Airservices website.