Mon May 03, 2021 5:53 pm
#1844679
When delivering my FRTOL courses I have a slide which discusses the speechless procedure (CAP413 Chapter 10.13 refers)
For those who are not aware this is a military procedure used in the event of being unable to transmit speech. CAP 413 also refers to the speechless code in the context of Distress and Urgency Communication Procedures (CAP413 chapter 8.18 refers)
This procedure is reproduced in part below:
I also frequently hear and sometimes see students and pilots clicking the PTT button twice in certain circumstances, I assume, to indicate either ‘affirm’ or ‘roger’ (meaning ‘yes’ and ‘I have received all your last transmission’ respectively).
This latter use of this PTT double-click seems to be at odds with the intended use under CAP413 Chapter 10.
Would someone enlighten me as to where the PTT double-click to mean ‘Affirm’ or ‘Roger’ originates?
Thank you
For those who are not aware this is a military procedure used in the event of being unable to transmit speech. CAP 413 also refers to the speechless code in the context of Distress and Urgency Communication Procedures (CAP413 chapter 8.18 refers)
This procedure is reproduced in part below:
I also frequently hear and sometimes see students and pilots clicking the PTT button twice in certain circumstances, I assume, to indicate either ‘affirm’ or ‘roger’ (meaning ‘yes’ and ‘I have received all your last transmission’ respectively).
This latter use of this PTT double-click seems to be at odds with the intended use under CAP413 Chapter 10.
Would someone enlighten me as to where the PTT double-click to mean ‘Affirm’ or ‘Roger’ originates?
Thank you
Last edited by Andrew Sinclair on Thu May 06, 2021 8:22 pm, edited 2 times in total.
FI(A) | IRI | GR(A) | FRTOL Examiner
http://www.andrewsaviation.co.uk
http://www.andrewsaviation.co.uk