Associated Press
A helicopter pilot was speaking with an air traffic controller in Houston when the aircraft crashed into a radio tower, killing all four people on board, according to a preliminary report by the National Transportation Safety Board. Pilot Samantha Grandbouche had contacted the controller after taking off on Oct. 20 for a sightseeing tour of the area and was told minutes later to maintain visual separation from another helicopter in the area, according to the report. The helicopter crashed into a 1,003-foot-tall (306-meter-tall) radio tower about 100 feet (30 meters) from its top and exploded as both the helicopter and tower fell to the ground with portions of the helicopter, including the fuselage, embedded in the tower, the report said.