So we don't like this- well do something !
I am slowly getting together my responce to this mode S thing and the most apparent error in the CAA document is the cost to industry.
Having just skimmed table 5.3.1.1 I see that the CAA thinks that a "lightwieght aviation SSR transponder" (LAST) costs £500-£1000.
A quick look at page 6 of popular flying shows the first of these units on sale for £1500 so clearly I will have to go and look more deeply into the costs as it would seem that section 5.3 of the document is somewhat wide of the mark !
Once I have digested the costs part of the document I will let you know the results but if the cost estimate for all the sections of 5.2 are as far adrift as the LAST estimate then it will be time to write to the minister of transport to let him know that the CAA document is misleading.