NIEDERANVEN, Luxembourg (AP) -- Families of the 20 people who died in a plane crash visited the site on Thursday as experts investigated why the flight from Berlin went down in heavy fog.
A day after Wednesday's crash, a French passenger rescued from the wreckage was declared out of critical condition, while the only other survivor, the Luxembourg pilot, was being treated for serious back injuries.
Authorities continued to look for clues to why the Luxair turboprop Fokker-50 crashed on approach to Luxembourg's Findel airport. The plane's black box was found late Wednesday.
The government has suggested the fog that shrouded the countryside early Wednesday could have been a factor. Others have said a flock of birds might have been sucked into the engines.
The families of the 15 German victims were flown in on a Luxair charter and visited the special morgue. They were expected to attend a ceremonial service later.
The flight carried three crew members and 19 passengers, mostly businessmen traveling to Luxembourg, a major European banking center.
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