NTSB Identification: SEA05LA016.
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Accident occurred Sunday, November 14, 2004 in Creswell, OR
Probable Cause Approval Date: 04/28/2005
Aircraft: Hannah Avid Amphibian, registration: N80AH
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.

Shortly after takeoff the pilot experienced a partial loss of engine power, followed a few seconds later by a total loss of engine power. The pilot initiated an approach to a landing straight ahead, but obstructions in his path necessitated a left turn to an open pasture. In his turn toward the pasture the pilot noticed several cows in his path, requiring him to turn further left to avoid them at a low altitude, resulting in a loss of airspeed and a subsequent stall. The aircraft impacted terrain with its left wing, coming to rest in an upright position. FAA inspectors were unable to confirm flight control continuity, but were able to confirm continuity through the engine drive train. The pilot reported to the inspectors that the engine was not equipped with a carburetor heat system and that he suspected carburetor ice. According to information on a Carburetor Icing Probability Chart, and the temperature/dew point in which the airplane was operating, a "serious icing" probability could have existed.













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

Carburetor icing and the failure of the pilot to maintain airspeed which resulted in a stall. Factors contributing to the accident included the lack of a carburetor heat system and the probability of carburetor ice.

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