# Commission Implementing Regulation (EU) No 923/2012 of 26 September 2012 laying down the common rules of the air and operational provisions regarding services and procedures in air navigation and amending Implementing Regulation (EU) No 1035/2011 and Regulations (EC) No 1265/2007, (EC) No 1794/2006, (EC) No 730/2006, (EC) No 1033/2006 and (EU) No 255/2010 (Text with EEA relevance), Division SERA.14085: Use of blind transmission

Extent: E+W+S+N.I.

(a) When an aircraft fails to establish contact on the designated channel, on the previous channel used or on another channel appropriate to the route, and fails to establish communication with the appropriate ATS unit, other ATS unit or other aircraft using all available means, the aircraft shall transmit its message twice on the designated channel(s), preceded by the phrase ‘ TRANSMITTING BLIND ’ and, if necessary, include the addressee(s) for which the message is intended.
(b) When an aircraft is unable to establish communication due to receiver failure, it shall transmit reports at the scheduled times, or positions, on the channel in use preceded by the phrase ‘ TRANSMITTING BLIND DUE TO RECEIVER FAILURE ’ . The aircraft shall:
(1) transmit the intended message, following this by a complete repetition;
(2) advise the time of its next intended transmission;
(3) when provided with ATS, transmit information regarding the intention of the pilot-in-command with respect to the continuation of the flight.

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Source: https://www.legislation.gov.uk/eur/2012/923/annex/section/14/division/SERA.14085 (the official version)
Page: https://openlegislation.uk/eu-regulation-2012-923/annex/section-14/division-SERA.14085
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.