Squawk 1000
Can any one shed any more light on the reason why we were asked to squawk 1000 whilst speaking to Rhine Radar this afternoon whilst heading East?
When asked to do so we looked at each other in puzzlement on the flight deck and asked for confirmation from ATC!
A little bit later the curiosity got the better of us and we asked for the reason why. ATC said that they use the Mode S readouts and that in order to do so, we needed to squawk 1000. Sounds a bit odd. Never had to do this when passing through the same sectors on previous trips. Also, didn't have to do so on the way back to the UK.
Can anyone satisfy our curiosity?