NTSB Identification: LAX89FA006.
The docket is stored on NTSB microfiche number 39063.
Accident occurred Sunday, October 02, 1988 in MT. BALDY, CA
Probable Cause Approval Date: 06/25/1990
Aircraft: BEECH A24R, registration: N8065R
Injuries: 2 Fatal.

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.

THE PLT HAD PREVIOUSLY FLOWN IN THE AREA OF HILLS & VALLEYS WHICH RANGED IN ALTITUDE FROM 2200 TO OVER 8000 FEET MSL. SOME OF THE VALLEY FLOORS ROSE RAPIDLY, WERE SURROUNDED BY INCREASINGLY TALLER MOUNTIANS AND WERE SHAPED LIKE A BOX CANYON. DURING THE PLEASURE FLIGHT IN VFR CONDITIONS THE PLT & HIS PAX ENTERED A BOX-LIKE CANYON. THE ACFT COLLIDED WITH 43 DEGREE UPSLOPING TERRAIN OF THE 4,000-FT MSL CANYON WALL.

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

PILOT'S IMPROPER IN-FLIGHT DECISION AND ALTITUDE.

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