this friday. a routine flight turned deadly on an airplane. investigators are looking into the cause. nbc's kurt gregory describes what happens. >> reporter: scary moments for the members of a u.s. flight forced to evacuate this plane when a tire on the the front landing gear blew during takeoff. >> she said the plane took off and then it came down and went up again and then it came down again and then it basically crash landed. >> airport officials say u.s. flight 1702 was departed philadelphia international airport heading for ft. lauderdale, florida, when the aircraft experienced a mechanical failure. the pilot on boarding takeoff skidded to a stop, nose down on the runway. all 149 passengers and crew members fled the jet, using inflatable chutes and emergency exits on the wings. >> the air crew did a find job.