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CAP1727: Electronic Conspicuity: GA pilot survey

In September 2017 the UK Civil Aviation Authority (CAA) conducted a short and focussed survey, asking general aviation pilots for their views on electronic conspicuity – technology in the aircraft that broadcasts its position.

Publication status: Current

Last updated: 31 October 2018

CAP3217: Electronic Conspicuity Initial Technical Concept of Operations: Consultation Response Document

This document summarises feedback received and explains how responses will inform future work on Electronic Conspicuity.

Publication status: Current

Last updated: 02 March 2026

CAP1391 SA2025-02: CAP 1391 Supplementary Amendment - Electronic Conspicuity Devices

The use of the 978 MHz UAT frequency onboard Unmanned Aircraft Systems.

The purpose of this Supplementary Amendment (SA) to Electronic Conspicuity Devices (CAP 1391) is to authorise the use of the 978 MHz Universal Access Transceiver (UAT) frequency for airborne transmission onboard Unmanned Aircraft Systems (UAS) applications, under the RTCA minimum performance standards DO-282B.

Publication status: Current

Last updated: 28 November 2025

CAP2498A: Minimum technical standards for electronic conspicuity and associated surveillance – Phase 1 Report

This document has been produced by EGIS as part of the project working on behalf of the UK Civil Aviation Authority (CAA) to Develop Minimum Technical Standards for Electronic Conspicuity (EC1) and associated Surveillance.

Publication status: Current

Last updated: 16 December 2022

CAP2583: Investigation into the Human Factors Effects of Electronic Conspicuity Devices in UK General Aviation

Electronic Conspicuity (EC) devices have recently become common in General Aviation (GA) and offer a means of supporting see-and-avoid.

Publication status: Current

Last updated: 16 November 2023

Joint Statement from CAA/DfT on the Development of a National Standard for Electronic Conspicuity

In November 2021, the CAA and DfT established the Surveillance Standards Task Force with industry to develop surveillance specifications, including a national, voluntary standard for Electronic Conspicuity (EC).

Last updated: 16 December 2022

SRG1757: Electronic Conspicuity - Declaration of Capability and Conformance

Publication status: Current

Last updated: 12 November 2025

CAP3140: Electronic Conspicuity – Initial Technical Concept of Operations (EC ConOps) 2025

Publication status: Current

Last updated: 14 July 2025

Bringing ADS-B surveillance trials to airfields

Steve Cooper from City Airport (Barton) explains the airfield's electronic conspicuity trial.

ADS-B is an emerging technology for GA but more and more aircraft are being fitted with the equipment and the CAA is putting a lot of emphasis in 2019 in getting much more of what flies in UK airspace to use electronic conspicuity (EC) equipment - ADS-B being one such solution.

Last updated: 01 March 2019

CAP 1391 supplementary amendments (SA)

SA to CAP 1391 Electronic Conspicuity Devices.