Passengers were thrown into the air by severe turbulence with little warning, NTSB report says

Washington (CNN) — Turbulence that injured more than a dozen people on a Delta Air Lines flight came with little warning to the pilots, even though they knew they were near thunderstorms, according to a new preliminary report from the National Transportation Safety Board.

The seat belt sign was off on July 30 when service carts, flight attendants, and unbelted passengers were suddenly thrown toward the plane’s ceiling.

The pilots of Delta Flight 56, an Airbus A330, were flying from Salt Lake City to Amsterdam when violent turbulence rocked the plane near Creston, Wyoming.

Twenty-five people on board, including seven crew members, were taken to hospitals following an emergency landing in Minneapolis. The plane was carrying 275 passengers and 13 crew members.

“A review of preliminary fl