They fly over it
There have been unexplained accidents there. Maybe more recorded ones than elsewhere because of the heavy traffic.
The area got the name when a flight of US Navy aircraft disappeared there in 1946?, seemingly without a trace. Later it was discovered the search had taken place in the wrong area (doh, that's why they were never found). The aircraft had experienced problems with their navigation, gotten lost and crashed into the ocean when they ran out of fuel.