Nightly News | April 09, 2013
>> first of its kind in the investigation of a fatal crash of an aircraft. in this case it was a helicopter on a medical mission. the pilot and three passengers were killed two years ago after the chopper ran out of fuel and crashed. the ntsb now says the pilot was distracted by sending and receiving over 20 text messages when he should have been conducting preflight checks. accident investigators say he missed several opportunities to see that the chopper was low on fuel before taking off.