I realise DL flies to NCE, but I would have thought it wasn't as well set up eng. wise. -> thought somewhere like FRA or LGW would have been more capable of dealing with the trouble as they would surely have more staff / facilities / spares due to higher frequencies....
I'm not opertaional, so didn't realise NAT system was south about currently, but even still NCE is a fair way south from ZRH, even if their initial heading was westerly over France, but then again they did have a lot to burn off & dump. And I guess dumping over the Med might be a Frenchy quirk...
As I said, no big deal, just curious as I thought it slightly odd...