# 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.14045: Transmitting technique

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

(a) Transmissions shall be conducted concisely in a normal conversational tone.
(b) The following words and phrases shall be used in radiotelephony communications as appropriate and shall have the meaning ascribed in Table S14-4:
Table S14-4
Phrase
Meaning
ACKNOWLEDGE
‘ Let me know that you have received and understood this message. ’
AFFIRM
‘ Yes. ’
APPROVED
‘ Permission for proposed action granted. ’
BREAK
‘ I hereby indicate the separation between portions of the message. ’
BREAK BREAK
‘ I hereby indicate the separation between messages transmitted to different aircraft in a very busy environment. ’
CANCEL
‘ Annul the previously transmitted clearance. ’
CHECK
‘ Examine a system or procedure. ’
CLEARED
‘ Authorised to proceed under the conditions specified. ’
CONFIRM
‘I request verification of: ( clearance, instruction, action, information ).’
CONTACT
‘ Establish communications with… ’
CORRECT
‘ True ’ or ‘ Accurate ’ .
CORRECTION
‘An error has been made in this transmission ( or message indicated). The correct version is…’
DISREGARD
‘ Ignore. ’
HOW DO YOU READ
‘ What is the readability of my transmission? ’ (see point SERA.14070(c))
I SAY AGAIN
‘ I repeat for clarity or emphasis. ’
MAINTAIN
‘ Continue in accordance with the condition(s) specified ’ or in its literal sense.
MONITOR
‘ Listen out on (frequency). ’
NEGATIVE
‘No’ or ‘Permission not granted’ or ‘That is not correct’ or ‘Not capable’.
OVER
‘ My transmission is ended, and I expect a response from you. ’
OUT
‘ This exchange of transmissions is ended and no response is expected. ’
READ BACK
‘ Repeat all, or the specified part, of this message back to me exactly as received. ’
RECLEARED
‘ A change has been made to your last clearance and this new clearance supersedes your previous clearance or part thereof. ’
REPORT
‘ Pass me the following information… ’
REQUEST
‘I should like to know…’ or ‘I wish to obtain…’
ROGER
‘ I have received all of your last transmission. ’
SAY AGAIN
‘ Repeat all, or the following part, of your last transmission. ’
SPEAK SLOWER
‘ Reduce your rate of speech. ’
STANDBY
‘ Wait and I will call you. ’
UNABLE
‘ I cannot comply with your request, instruction, or clearance. ’
WILCO
(Abbreviation for ‘ will comply ’ )
‘ I understand your message and will comply with it. ’
WORDS TWICE
(a) As a request: ‘Communication is difficult. Please send every word, or group of words, twice.’
(b) As information: ‘Since communication is difficult, every word, or group of words, in this message will be sent twice.’

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Source: https://www.legislation.gov.uk/eur/2012/923/annex/section/14/division/SERA.14045 (the official version)
Page: https://openlegislation.uk/eu-regulation-2012-923/annex/section-14/division-SERA.14045
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.