NTSB Identification: LAX86LA251.
The docket is stored on NTSB microfiche number 32687.
Accident occurred Saturday, June 14, 1986 in CUCAMONGA, CA
Probable Cause Approval Date: 03/10/1988
Aircraft: PIPER PA-28-140, registration: N4593R
Injuries: 1 Minor.

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

DURING A PLEASURE X-COUNTRY FLIGHT IN THE STUDENT PLT'S OWN ACFT, HE ELECTED TO FLY OVER A RIDGE OF HILLS RATHER THAN VIA A LONGER ROUTE WHICH CIRCUMNAVIGATED THE HILLS. WHILE CLIMBING ENROUTE THE PLT ENTERED A BOX CANYON, EXPERIENCED A DOWNDRAFT AND COLLIDED WITH TERRAIN.

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

IN-FLIGHT PLANNING/DECISION..IMPROPER..PILOT IN COMMAND


Contributing Factors

VFR PROCEDURES..IMPROPER..PILOT IN COMMAND


Contributing Factors

JUDGMENT..POOR..PILOT IN COMMAND


Contributing Factors

ALTITUDE..INADEQUATE..PILOT IN COMMAND



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