HOUSTON—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 (NTSB).
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.
