By the way, did you know that there's an updated edition of CAP 804 now available at
http://www.caa.co.uk/docs/33/CAP804%...searchable.pdf as well as an associated Information Notice
http://www.caa.co.uk/docs/33/Informa...ice2015036.pdf ?
I'm slowly weaning people off using 'RTF' when they mean 'RF' - the IN is correct (thanks for that), but there is still some incorrect use in CAP 804.