- Publications and resources
- Rules and regulations
- Safety management
- Licences and certification
- About us
Go to top of page
Electronic Conspicuity devices
On this page
As a Pilot in Command (PIC) you need to ensure that your Electronic Conspicuity (EC) device has a valid declaration of capability and conformance.
The listed EC devices have a valid declaration of capability and conformance.
If you are a manufacturer wishing to submit a Declaration of Capability and Conformance please read below.
An EC device transmits Automatic Dependent Surveillance-Broadcast information about the position of an aircraft to other airspace users operating similar equipment.
EC devices can be used voluntarily in aircraft operated to the Visual Flight Rules (VFR) below FL290.
An EC device cannot be used instead of a transponder for operations in Class A, C, or E airspace or above 10 000ft AMSL in Class G airspace.
However, it is acceptable to simultaneously operate a transponder and an EC device, but only if the transponder is not itself outputting ADS-B position information.
Full details about the legal requirements for using EC devices can be found in Civil Aviation Order (CAO) 20.18.
If you have any questions or would like to report an issue with an EC device please contact us.
Civil Aviation Order (CAO) 20.18 specifies the minimum technical requirement that need to be met when manufacturing EC devices or marketing EC devices for use in Australia. CAO 20.18 specifies unique Australian requirements and cross-refers requirements within Civil Aviation Publication (CAP) 1391 (version two or later) produced by the UK Civil Aviation Authority. More information can also be found in CASA AC 91-23 v1.0 (pdf 376.94 KB).
Your device can only be used on board an aircraft if the device has a valid declaration of capability and conformance. To enable this, you must fill in and send to CASA a Declaration of capability and conformance - Electronic Conspicuity (EC) device (pdf 173.17 KB).
If CASA considers the manufacturer has made a valid declaration of capability and conformance to clauses 1 to 5 of Part B of Appendix XIV of Civil Aviation Order 20.18, CASA will list details of the device on our Electronic Conspicuity devices page.
Certain changes to your EC device require a new declaration of capability and conformance to be submitted, please read the AC 91-23 for full details.
If it comes to our attention that there is an issue with your declaration or EC device, we will contact you using the details you have provided.
If you are using an EC device on an unregistered aircraft, you need to contact the civil aircraft register and provide your contact details, and the make, model and serial number of your EC device.
We will then allocate the EC device a unique ICAO 24-bit address to enable it to be used on multiple unregistered aircraft without re-programming.
If you are using your EC device on a registered aircraft with an existing ICAO 24-bit address, you must program this address into your EC device. Contact the civil aircraft register if you don’t know the 24-bit address for your aircraft.
If you need to move the device between registered aircraft, it must be reprogrammed with the new aircraft's ICAO 24-bit address (as appropriate).
If you sell or dispose of your EC device, you need to clear any registered aircraft 24-bit address before the sale.