NTSB Identification: LAX87IA304.
The docket is stored on NTSB microfiche number 37734.
Scheduled 14 CFR operation of AMERICAN AIRLINES, INC.
Incident occurred Tuesday, August 11, 1987 in SANTA MONICA, CA
Probable Cause Approval Date: 07/10/1989
Aircraft: BOEING 737, registration: N754UA
Injuries: 46 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.

THE PLTS OF A BOEING 737 REPORTED THAT A NEAR-COLLISION OCCURRED APRX 2.5 MILES EAST OF THE SANTA MONICA VOR WHILE THEY WERE DESCENDING THROUGH AN ALTITUDE OF ABOUT 7400 FT MSL. THE COPLT SAW THE OTHER ACFT FIRST & TOOK IMMEDIATE EVASIVE ACTION. HE ESTIMATED THEY PASSED THE UNIDENTIFIED ACFT WITH APRX 100 FT SEPARATION. THE OTHER ACFT WAS NOT VISUALLY OBSERVED BY THE AIR TRAFFIC CONTROLLER PRIOR TO THE INCIDENT. THE INCIDENT OCCURRED OUTSIDE THE LOS ANGELES TCA WHERE ENCODING ALTIMETERS WERE NOT REQUIRED.

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

MONITORING..INADEQUATE..ATC PERSONNEL(DEP/APCH)

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

VISUAL LOOKOUT..INADEQUATE..PILOT OF OTHER AIRCRAFT

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