Bombardier DHC-8-402 N449QX accident near Reno, Nevada

Probable cause

The airplane’s encounter with known moderate-to-severe turbulence, which resulted in a serious injury to a flight attendant.

NTSB analysis

During the descent with known moderate-to-severe turbulence, the flight crew notified the cabin crew, which consisted of a forward and an aft flight attendant, to expect turbulent conditions, finish the cabin service, and be seated. As the airplane was leveling out, it encountered the first of a series of turbulent jolts of severe turbulence. The aft flight attendant had finished making a public announcement and was buckling herself into a jumpseat when the first jolt of severe turbulence hit. She was knocked out of the jumpseat onto the floor. The airplane encountered a second jolt of severe turbulence before she was able to get into her seat, and she was thrown to the ceiling and then back down to the floor, which resulted in a serious injury. The forward flight attendant had been checking on a passenger when the turbulence occurred and was thrown to the ceiling and hit the overhead bin. The passenger she was checking on flew out of his seat because he had not fastened his seatbelt, and he landed on the armrest of another seat.

Text from the NTSB. Open the NTSB docket for WPR13LA431 for the full record.