The attached CAO will give you an update on where the decommissioning of the NDB network in Australia is at. See page 6 of the Regulation Impact Statement
NDB Decommissioning CAO 20 18 (No
“………………There are approximately 415 terrestrial navigation aids located across Australia of which approximately 200 (mostly non-directional beacons and VHF Omni Range equipment installations) are mostly at end-of-life, do not have spare parts support by manufacturers and are difficult and expensive to maintain. Airservices Australia has estimated that it would cost approximately $120m to replace or upgrade the 200 navigation aids to support the current level of navigation services required for Instrument Flights Rules aircraft. The progressive rollout of the replacement navigation aids would need to be carried out in the next 2-3 yearsas the existing equipment is old and cannot be maintained beyond 2016……………..”
