A Lufthansa aircraft lands at the airport of Frankfurt, central Germany, Tuesday, April 20, 2010. German airspace is officially closed for regular flights until Tuesday at 1800 GMT (8:00 p.m. EDT). Airlines permitted to operate a limited number of passenger flights under so-called visual flight rules, meaning that they can only fly at low levels within German airspace.(AP Photo/Michael Probst)
Zdroj:
Michael Probst
