NTSB Identification: SEA02LA137.
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Accident occurred Wednesday, July 24, 2002 in Elsie, OR
Probable Cause Approval Date: 04/08/2003
Aircraft: Bell 206B, registration: N60PH
Injuries: 1 Uninjured.

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

The pilot of the Bell 206B rotorcraft was en route at 110-115 miles per hour in level cruise flight approximately 1,500 feet above ground level (agl) when the right front windscreen shattered and separated from the windscreen frame. The rotorcraft yawed to the right and entered into a descending right turn which the pilot recovered from approximately 500 feet agl. An FAA inspector who examined the helicopter after the accident reported that the center portion of the windscreen had broken inward, with the windscreen edges remaining attached to the airframe. The FAA inspector reported that his examination did not reveal any evidence of a bird strike. The windscreen had been replaced in 1992 and a warp was noted on the far right side of the pilot's windscreen when the rotorcraft was acquired by the operator. The pilot reported that a mechanic associated with the previous owner said that the warp was from an unknown heat source in the past, although this could not be positively related to the accident separation.

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

The shattering and separation of the forward right (pilot's) windscreen for undetermined reason(s).

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