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Originally Posted by Bigtime
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Reports didn't come in till late yesterday, not sure why it took so long. Might have legitimately been severe as they sent in a replacement, aircraft (media likes to call turbulence severe or extreme even if it's just a few moderate jolts)
Somebody ought to send them the FAA definitions...
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Light Chop. Slight, rapid, and somewhat rhythmic bumpiness without appreciable changes in altitude or attitude.
Light Turbulence. Slight, erratic changes in altitude and/or attitude. Occupants may feel a slight strain against seatbelts. Unsecured objects may be displaced slightly. Food service may be conducted and little to no difficulty is encountered in walking.
Moderate Chop. Rapid bumps or jolts without appreciable changes in aircraft altitude or attitude.
Moderate Turbulence. Changes in altitude and/or attitude occur but the aircraft remains in positive control at all times. It usually causes variations in indicated airspeed. Occupants feel definite strain against seatbelts. Unsecured objects are dislodged. Food service and walking are difficult.
Severe. Large, abrupt changes in altitude and/or attitude. Usually causes large variations in indicated airspeed. Aircraft may be momentarily out of control. Occupants are forced violently against seatbelts. Unsecured objects are tossed about. Food service and walking are impossible.
Extreme. Aircraft is violently tossed about and is practically impossible to control. May cause structural damage.
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