Alert: SW2025/397

Electronic Conspicuity: Updates to CAP 1391 Supplementary Amendment & SRG1757 Form

The UK Civil Aviation Authority has released Version 2 of the CAP 1391 Supplementary Amendment. It includes updates to the licensing conditions regarding 24-bit aircraft addresses and the differences in SSR Mode A codes for unmanned aircraft with a 978 MHz UAT device. We have also updated the SRG1757 Electronic Conspicuity Declaration of Capability & Conformance form for an EC device manufacturer to declare a device that conforms to the specification set out in CAP 1391. Please email EC@caa.co.uk if you have any questions.