Notice a fault with your radalt?  

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image: © Pilatus Aircraft Ltd | PC-12 Glass cockpit

CASA wants to hear from you 

CASA is monitoring the introduction of 5G across Australia following international concern about the interaction between 5G and radio altimeters (radalts). We want to ensure that the rollout of 5G can be done in a way that ensures the safety of aircraft.

To help us record potential effects of 5G on radalts, we are encouraging all aircraft operators to report possible 5G interference at or below 2500 ft AGL. This is particularly helpful if you regularly fly near one of the 19 airports with instrument approach procedures reliant on radalts.

Operators should report any incorrect radalt displays or indications during take-off and landing, as well as any aircraft system faults caused by radalt inputs. We have developed Airworthiness Bulletin AWB 34-020 which provides more information about what to report.

Safety mitigations into 2026

To protect against the risk of 5G interfering with radio altimeters and to minimise disruptions, there are a range of mitigations in place at 19 airports across Australia where instrument landings using radio altimeters are permitted.

The mitigations restrict wireless broadband deployments in the 3.7-4.0 GHz band around runways and approaches at the identified airports. The mitigations end on 31 March 2026.

Find out more about what we’re doing to monitor the rollout of 5G.

 

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