NTSB Identification: ATL88FA239.
The docket is stored on NTSB microfiche number 38385.
Scheduled 14 CFR operation of DELTA AIRLINES INC.
Accident occurred Friday, August 26, 1988 in CHARLESTON, SC
Probable Cause Approval Date: 01/04/1990
Aircraft: BOEING 767, registration: N120DL
Injuries: 1 Serious,9 Minor,55 Uninjured.

NTSB investigators either traveled in support of this investigation or conducted a significant amount of investigative work without any travel, and used data obtained from various sources to prepare this aircraft accident report.

WHILE CRUISING AT 41000 FEET THE FLIGHT ENCOUNTERED SEVERE TURBULENCE. THE PILOT WAS IN THE PROCESS OF DEVIATING AROUND THUNDERSTORM ACTIVITY WHEN THE TURBULENCE WAS ENCOUNTERED. THE PILOT SAID THAT THE TSTM WAS NOT VISIBLE ON RADAR AND CIRRUS CLOUDS PRECLUDED EARLIER VISUAL DETECTION OF THE TSTM. A FLIGHT ATTENDANT IN THE REAR GALLEY WAS THROWN TO THE CEILING. THE FLIGHT ATTENDANT SUSTAINED SERIOUS BACK INJURIES. FOOD AND OTHER CABIN DEBRIS WERE SCATTERED THROUGHOUT THE CABIN. CONVECTIVE ACTIVITY WAS NOT FORECAST FOR THE AIRSPACE IN WHICH THE FLIGHT WAS OPERATING.

The National Transportation Safety Board determines the probable cause(s) of this accident to be:

WEATHER CONDITION..TURBULENCE(THUNDERSTORMS)

The National Transportation Safety Board determines the probable cause(s) of this accident to be:

SEAT BELT SIGN..DELAYED..PILOT IN COMMAND

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