Officials say the business jet may have experienced problems with its stability before it hit roughness that caused the death Dana Hyde, a passenger who served in prominent posts for two presidents.

Over the past week, turbulence caused one death on a business jet and seven hospitalizations on a commercial flight. Here's what to know about how to keep yourself safe and why turbulence happens.

Hawaiian Airlines' chief operating officer said the airline had not experienced "an incident of this nature in recent history," calling it an isolated and unusual event.