brazilian prosecutors call for airport to suspend flights during crash investigation (2/2)
officials say the bodies of most of the victims have been recovered, but work is slow because of fears that the heavily damaged buildings may collapse.
brazilian investigators are working with experts from the plane's maker, airbus, as well as officials from the u.s. national transportation safety board.
jim hall, a former chairman of the u.s. agency, said the probe into the crash will consider numerous factors, including rainy conditions at the time of the accident.
earlier this year, airport officials the runway used by the tam flight, but they said workers had not yet cut into the to help channel rain water.
hall said he has flown into congonhas airport, and said he recalls that it has a very short runway and is located in a dense urban area. he said brazilian officials have been aware of safety concerns for some time.
hall says one possible safety measure is placing a surface called "crushable concrete" at the end of the to help stop airplanes. he said several u.s. airports use the material that allows a plane's wheels to sink in, and slow the aircraft down.