SERA.14045 Transmitting technique

(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.’

(c) The expression “TAKE-OFF” shall only be used in radiotelephony when an aircraft is cleared for take-off or when cancelling a take-off clearance.