NTSB Identification: LAX96FA140.
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Accident occurred Friday, March 22, 1996 in ONTARIO, CA
Probable Cause Approval Date: 12/16/1996
Aircraft: Schweizer 269C, registration: N155T
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 non instrument rated private pilot contacted ATC while in VFR conditions on top of an overcast cloud layer and in proximity of mountains. After acknowledging instructions to maintain VFR, the pilot informed the controller that he was descending to his destination. The helicopter impacted mountainous terrain at the 4,600 foot (msl) elevation level. Weather at the nearest reporting point, 8 miles south of the accident site, included a 2,900 foot msl broken cloud layer and a 4,900 foot msl overcast cloud layer. The person who refueled the helicopter at the departure point reported that the pilot appeared anxious to get to his destination.

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

The pilot's decision to attempt a VFR descent into instrument meteorological conditions resulting in spatial disorientation.

Full narrative available

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