Aviation Accident Summaries

Aviation Accident Summary ATL91LA123

ALMA, GA, USA

Aircraft #1

N605DL

BOEING 757-232

Analysis

THE PILOTS REPORTED THAT THEY WERE DEVIATING AROUND TWO THUNDERSTORM CELLS LOCATED 20 TO 25 MILES EAST OF THEIR POSITION. AS THEY CAME OUT OF THE BOTTOM OF A CIRRUS LAYER, THEY OBSERVED A DISSIPATING CUMULUS CLOUD IN THEIR FLIGHT PATH. THIS CLOUD WAS NOT OBSERVED ON THEIR WEATHER RADAR, AND AVOIDANCE WOULD HAVE REQUIRED AN ABRUPT, VIOLENT MANEUVER. THE FLIGHT CREW ACTIVATED THE SEAT BELT SIGN JUST PRIOR TO CLOUD PENETRATION. THE FLIGHT EXPERIENCED A TURBULENCE EPISODE OF ABOUT FOUR SECONDS IN DURATION. A FEMALE PASSENGER, WHO WAS ENTERING THE LAVATORY AT THE TIME CAUGHT HER FOOT IN THE LAVATORY DOOR, BREAKING HER ANKLE.

Probable Cause and Findings

TURBULENCE IN CLOUDS, WHICH WAS ASSOCIATED WITH A DISSIPATING THUNDERSTORM.

 

Source: NTSB Aviation Accident Database

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