Absence • Activities • Adjust • Advanced • Alternate • Area • Aviation • Crew • Definition • Detected • Direction • Effect • Essential • Forces • Forecasts • Freely • From • Given • Handle • Instructions • Maintain • Making • Modern • Move • Normal • Occurs • Passengers • Planned • Primarily • Proceed • Prone • Reduces • Seatbacks • Seatbelts • Severe • Should • Speed • Stability • Stable • Sudden • Take • Term • Tested • Thunderstorms • Turbulence. • Turbulent • Type • Unpredictable • Weather • Withstand