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                                                    Ex-NTSB chairman: Radar can’t track ash
                                                 
                                                    
                                                        |   | Ex-NTSB chairman: Radar can’t track ash 
                                                                In his own words,  Mark Rosenker discusses the numerous threats that volcanic ash can pose to an airplane. (Nightly News)  Mark Rosenker - National Transportation Safety Board - Radar - England - Ash
                                                             
                                                                
                                                                
                                                                
                                                                    Video Length: 0
                                                                 
                                                                    Date Found: April 16, 2010
                                                                 
                                                                    Date Produced: April 16, 2010
                                                                 
                                                                    View Count: 14
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