GPS failed to factor in aircraft’s altitude — NTSB on Manatee helicopter crash

According to a preliminary report from the National Transportation Safety Board, Moore was using a GPS system to guide his path at night and he was wearing night vision goggles to see.

However, the GPS did not factor in the altitude of the helicopter or the height of obstacles, officials said.

The system showed hazard lights, but it did not provide any warning sounds.

After going over areas previously sprayed, investigators said the helicopter hit a 150-foot radio tower while flying at 130 feet.