NTSB Identification: LAX88LA030.
The docket is stored on NTSB microfiche number 34938.
Accident occurred Saturday, October 31, 1987 in SAN JOSE, CA
Probable Cause Approval Date: 04/24/1989
Aircraft: PIPER PA-22-150, registration: N4771A
Injuries: 2 Serious.

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

WHILE FLYING 500-600 FEET ABOVE THE TERRAIN ON A LOCAL PLEASURE FLIGHT, THE PILOT TURNED INTO WHAT HE BELIEVED TO BE AN OPEN ENDED CANYON. AFTER BECOMING AWARE THAT HE HAD INADVERTENTLY TURNED INTO A BOX CANYON, THE PILOT ATTEMPTED A 'CHANDELLE TURN' TO EXIT THE CANYON. AS THE AIRCRAFT COMPLETED THE TURN THE RIGHT WING COLLIDED WITH A TREE.THE AIRCRAFT IMPACTED THE GROUND AND A SMALL FIRE ERUPTED.

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

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

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

CLEARANCE..MISJUDGED..PILOT IN COMMAND


Contributing Factors

TERRAIN CONDITION..BLIND/BOX CANYON


Contributing Factors

LACK OF FAMILIARITY WITH GEOGRAPHIC AREA..PILOT IN COMMAND

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