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Avionics
and devices such as VFR Moving Maps or
Electronic Conspicuity may cause serious
distraction in flight if you do not familiarise
yourself with them first.
3Safety Sense / 02 / RadiotelephonySafety Sense / 02 / Radiotelephony
CAA / September 2023
https://www.caa.co.uk/general-aviation/pilot-licences/flight-radio-telephony-operator-licence/
https://www.caa.co.uk/general-aviation/pilot-licences/flight-radio-telephony-operator-licence/
https://www.ofcom.org.uk/manage-your-licence/radiocommunication-licences/aeronautical-licensing
https://www.caa.co.uk/commercial-industry/aircraft/airworthiness/aircraft-equipment/aircraft-equipment/
‘Squelch’ is an electronic
switch that mutes the receiver
audio output when very weak
or no signal is received.
Last updated: 19 December 2024
First published 2025
Enquiries regarding the content of this publication should be addressed to: charges@caa.co.uk
The latest version of this document is available in electronic format at: www.caa.co.uk/CAP3089
mailto:charges@caa.co.uk
CAP3089
March 2025 Page 3
OFFICIAL - Public.
Last updated: 12 March 2025
It can be a stand-alone
instrument, combined with other instruments (such as VOR), or part of an integrated electronic
navigation display.
Last updated: 17 November 2021
These included:
o £100,000 to upgrade avionics on all club aircraft to reduce
risk of airspace infringements and upgrades to electronic
conspicuity.
Last updated: 15 May 2023
Full consultation document and feedback form (electronic
and print versions) published on website (copies also issued
to all public libraries in region)
14 Jun All Press release issued – covered by three local media groups
and radio.
Last updated: 23 November 2021
(CAA)
CAP 1430 Definitions
30 September 2025 Page 26
E
Electronic Conspicuity An umbrella term for a range of technologies that can help
airspace users to be more aware of other aircraft in the same airspace.
Last updated: 01 August 2025
Describes how airspace
changes can improve access for other
airspace users by reducing the net
volume of controlled airspace and
enabling integration, in conjunction
with the widespread adoption of
electronic conspicuity technology.
Last updated: 11 May 2022
Minimum meteorological conditions: sufficient meteorological conditions to maintain
VMC minima plus additional requirements to increase visible conspicuity.
Last updated: 22 June 2026
Your transponder must always be switched
to mode C (ALT) when airborne, with the
appropriate conspicuity code (VFR – 7000) or
Frequency Monitoring Code (FMC) set, unless
instructed otherwise.
Last updated: 18 April 2024
First published 2018
The latest version of this document is available in electronic format at: www.caa.co.uk
January 2018 Page 3
Contents
1.
Last updated: 09 January 2018
