Hi,

In article ,
wrote:

Well it's completely redundent, a waste of time and could be confused
with "say again". All you need to do is just repeat the message!
What's I find strange is that the stated format of the mayday ralay
does not follow international conventions. I wonder who wrote it?

That document is the official CAA (Civil Aviation Authority) reference for
R/T, presumably for the UK.

The introduction says it is based on ICAO Annex 10 Volume 2 (Communications
Procedures). It also includes the following statement:

"Where the ICAO standard phraseology may be misunderstood, or has weaknesses
in the UK environment, different phraseology has been specified (and
notified to ICAO). Significant differences between the ICAO standard
phraseology and that specified for use in CAP 413 are described in Appendix
1 to this publication."

Appendix 1 doesn't mention any differences in the Mayday messages.

(Note, I'm not arguing you're wrong, I don't know enough to be able to do
that. Just repeating what the documentation I've been reading says)

Andy