A group of ground staff at Frankfurt airport is beginning a new three-day strike in a long-running pay dispute. The GdF union called the strike from 9 p.m. Sunday (2000 GMT; 3 p.m. EST) until 5 a.m. Thursday (0400 GMT; 11 p.m. EST Wednesday) after the latest talks collapsed. It follows a three-day strike last week at Europe\'s third-busiest airport. Airport operator Fraport says it kept more than 80 per cent of flights running last week and expects to do so this time, too. Still, German news agency dapd reported that Lufthansa canceled some 140 flights for Monday. Fraport has criticized GdF demands for double-digit wage increases for around 200 workers who oversee operations on the tarmac. The union says it just wants Frankfurt salaries brought into line with other airports.