Jacobus, it came out in an AIC about a year ago. When I am next at work I'll get the reference number. As for your query re the Airbus/Boeing I can't say that there is any weighting either way. I think one could assume there are more Cathay A330 movements in and out of HK than other types because a/ there are more A330's/340's than Boeings (are there not?) and b/ also the A330's do a lot of regional flights so they tend to be in and out more often . Mind you I am just guessing here, but my experience says that there are just as many Boeing hiccups as Airbus when it comes to transponder operation...or lack thereof. I love it when we say "turn transponder on" and the various replies we get range from sheepish to out right indignation.
As for some of the other crap that has been posted here...I am at a loss to explain some of the outright unprofessional statements made here by one or two people.