NTSB Identification: ATL88IA241.
The docket is stored on NTSB microfiche number 38165.
Scheduled 14 CFR operation of USAIR
Incident occurred Tuesday, August 30, 1988 in SAVANNAH, GA
Probable Cause Approval Date: 01/25/1990
Aircraft: BOEING 737-387, registration: N353AU
Injuries: 13 Minor,81 Uninjured.

NTSB investigators used data provided by various sources and may not have traveled in support of this investigation to prepare this aircraft incident report.

WHILE CRUISING AT FL 310, USAIR FLIGHT 333 ENCOUNTERED SEVERE TURBULENCE. THE PILOT REPORTED OBSERVING THE THUNDERSTORM ACTIVITY ON THE AIRBORNE RADAR. THE FLIGHT WAS WITHIN 20 MILES OF THE CELL BEFORE ACTION WAS TAKEN TO AVOID THE ENCOUNTER. THE RECOMMENDED PENETRATION AIRSPEED IS .70 MACH OR 280 KNOTS. THE PILOT REPORTED MAINTAINING .76 MACH DURING THE ENCOUNTER.

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

WEATHER CONDITION..TURBULENCE(THUNDERSTORMS)

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

CLEARANCE..NOT MAINTAINED..PILOT IN COMMAND

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

AIRSPEED..EXCESSIVE..PILOT IN COMMAND


Contributing Factors

WEATHER RADAR..IMPROPER USE OF..PILOT IN COMMAND

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