TOPDOG ULTRALIGHTS TOP DOG 582 near Eagle Point, OR — 2010-07-16

Probable cause

The separation of the left wingtip.

NTSB narrative

The pilot reported that, shortly after takeoff, the weight-shift-control aircraft turned sharply to the left, impacted bushes and terrain, and came to rest in a creek. Postaccident examination of the aircraft revealed that the left wingtip had separated in flight, which resulted in the uncommanded left turn. The reason for the wingtip separation could not be determined.

Analysis

Primary failure mode

Loss of control

First missed decision gate

Properly securing the left wingtip before takeoff could have prevented the accident.

NTSB coding

• Aircraft structural failure · Takeoff

Evidence available

• 4 docket documents

Docket documents4

• Pilot/Operator Aircraft Accident Report, NTSB Form 6120.1form
• Record of Conversation - Evansother
• Record of Conversation - Evans Julyother
• Record of conversation - Michaelsother

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