The US requires that personal details of airline passengers is provided to them within 15 minutes of a flight departing en route to the US.
The European Federation ruled that this was illegal under European Data Protection laws.
Airlines leaving the European Federation bound for the US may lose their landing rights or face prosecution for failing to provide the details and will be prosecuted by the European Federation if they do.
The details required by the US authorities includes names, addresses, credit card details and even in-flight meal choices.
Flights leaving the UK will not currently be affected because the British government has come to a temporary agreement with the Americans. When that agreement expires, however, the British government will have to make a choice – the US and the rest of the world or the European Federation.