Air travellers faced a scramble to catch flights at Paris' Charles de Gaulle airport Tuesday after an accident on the rail link to the city centre put the line out of action for the whole day. Traffic on the RER B commuter line was blocked to and from Paris' main airport just before 9:00 am (0800 GMT) after a train brought down overhead power lines, said a spokesman for rail company SNCF. The damage stretched over a full kilometre (0.6 miles), cutting traffic between Paris and the airport, which lies to the north of the capital, said the spokesman.