--- title: "SERA.14045 Transmitting technique — ANNEX: Rules of the Air, SERA · Avioverse" description: "Transmissions shall be conducted concisely in a normal conversational tone." url: "https://avioverse.aero/regulations/easa/sera/annex-rules-of-the-air/section-14/sera-14045" --- # SERA.14045 Transmitting technique ANNEX: Rules of the Air · Regulation (EU) No 923/2012 · EAR revision 26 Aug 2025 IR Implementing rule ## 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](https://avioverse.aero/glossary/easa/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](https://avioverse.aero/glossary/easa/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. IR · SERA.14045 — Regulation (EU) No 923/2012 · Regulation (EU) 2024/404 · SERA Easy Access Rules · EAR revision 26 Aug 2025 GM Guidance material ## GM1 SERA.14045 Transmitting technique BREAK ‘BREAK’ is to be used where there is no clear distinction between the text and other portions of the message. GM · GM1 SERA.14045 — Regulation (EU) No 923/2012 · ED Decision 2016/023/R · SERA Easy Access Rules · EAR revision 26 Aug 2025 GM Guidance material ## GM2 SERA.14045 Transmitting technique CHECK ‘CHECK’ is not to be used in any other context than ‘examine a system or procedure’. No answer is normally expected. GM · GM2 SERA.14045 — Regulation (EU) No 923/2012 · ED Decision 2016/023/R · SERA Easy Access Rules · EAR revision 26 Aug 2025 GM Guidance material ## GM3 SERA.14045 Transmitting technique MAINTAIN For example, ‘Maintain [VFR](https://avioverse.aero/glossary/easa/vfr)’. GM · GM3 SERA.14045 — Regulation (EU) No 923/2012 · ED Decision 2016/023/R · SERA Easy Access Rules · EAR revision 26 Aug 2025 GM Guidance material ## GM4 SERA.14045 Transmitting technique OVER ‘OVER’ is not normally used in VHF communications. GM · GM4 SERA.14045 — Regulation (EU) No 923/2012 · ED Decision 2016/023/R · SERA Easy Access Rules · EAR revision 26 Aug 2025 GM Guidance material ## GM5 SERA.14045 Transmitting technique OUT ‘OUT’ is not normally used in VHF communications. GM · GM5 SERA.14045 — Regulation (EU) No 923/2012 · ED Decision 2016/023/R · SERA Easy Access Rules · EAR revision 26 Aug 2025 GM Guidance material ## GM6 SERA.14045 Transmitting technique ROGER ‘ROGER’ is under no circumstances to be used in reply to a question requiring ‘READ BACK’ or a direct answer in the affirmative (AFFIRM) or negative (NEGATIVE). GM · GM6 SERA.14045 — Regulation (EU) No 923/2012 · ED Decision 2016/023/R · SERA Easy Access Rules · EAR revision 26 Aug 2025 GM Guidance material ## GM7 SERA.14045 Transmitting technique STANDBY The caller would normally re-establish contact if the delay is lengthy. ‘STANDBY’ is not an approval or denial. GM · GM7 SERA.14045 — Regulation (EU) No 923/2012 · ED Decision 2016/023/R · SERA Easy Access Rules · EAR revision 26 Aug 2025 GM Guidance material ## GM8 SERA.14045 Transmitting technique UNABLE ‘UNABLE’ is normally followed by a reason. GM · GM8 SERA.14045 — Regulation (EU) No 923/2012 · ED Decision 2016/023/R · SERA Easy Access Rules · EAR revision 26 Aug 2025 [All rules in SECTION 14 Voice communication procedures](https://avioverse.aero/regulations/easa/sera/annex-rules-of-the-air/section-14) Consolidated from the EASA Easy Access Rules (revision 26 Aug 2025, extracted 13 Oct 2026) for convenience. Not the official publication — verify against the Official Journal of the European Union and the EASA publications before operational use.