Incident Overview
A transport category airplane experienced severe turbulence while deviating around weather at flight level 280 (FL280). The flight crew had been navigating around a weather system when the encounter occurred.
Preceding Events
The captain had informed the flight attendants to leave the beverage carts stowed and to take their seats, indicating that they might experience "a few bumps" for the next several minutes. The "Fasten Seat Belt" sign had been illuminated since takeoff and remained on throughout the flight.
Turbulence Encounter
A few minutes later, the airplane encountered moderate turbulence with no preceding chop. One flight attendant was in the aft galley, attempting to stow the beverage cart after receiving a call reporting possible turbulence. While trying to secure the cart, it rolled into her right side, causing a fractured femur.
Aftermath
Following the turbulence encounter, the crew decided to divert to another airport. The aircraft landed without further incident. No other injuries or damage were reported.
Investigation Findings
The investigation did not specify a probable cause for the event. The focus was on the circumstances of the turbulence encounter and the resulting injury.