NTSB Identification: CHI88IA081.
The docket is stored on NTSB microfiche number 37975.
Scheduled 14 CFR operation of AMERICAN AIRLINES
Incident occurred Thursday, March 24, 1988 in CIMARRON, NM
Probable Cause Approval Date: 01/25/1990
Aircraft: BOEING 767-200, registration: N308AA
Injuries: 3 Minor,208 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 IN NORMAL CRUISE FLIGHT AT FL 370, THE FLT CREW WAS ADVISED BY ARTCC PERSONNEL THAT OTHER AIRCRAFT WERE EXPERIENCING OCCASIONAL SEVERE TURBULENCE AT FL 370 ALONG THEIR ROUTE OF FLIGHT. A DESCENT WAS MADE TO FL 330 TO AVOID TURBULENCE. LATER, AS THE AIRCRAFT WAS CRUISING AT FL 330 WITH THE SEAT BELT SIGN OFF, IT ENCOUNTERED 'SEVERE CHOP WITH SEVERE TURBULENCE, IN CLEAR AIR.' ONE FLIGHT ATTENDANT AND TWO PASSENGERS WERE INJURED DURING THE TURBULENCE ENCOUNTER. THE AIRCRAFT CONTINUED TO ITS DESTINATION WITHOUT FURTHER INCIDENT.

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

WEATHER CONDITION..TURBULENCE,CLEAR AIR



Contributing Factors

FLIGHT INTO KNOWN ADVERSE WEATHER..INADVERTENT..PILOT IN COMMAND


Contributing Factors

SEAT BELT SIGN..DISCONTINUED..PILOT IN COMMAND

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