NTSB Identification: DEN01LA065.
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Accident occurred Friday, March 09, 2001 in Ivins, UT
Probable Cause Approval Date: 07/30/2001
Aircraft: ERCO 415-C, registration: N1121J
Injuries: 1 Uninjured.

NTSB investigators may have traveled in support of this investigation and used data provided by various sources to prepare this aircraft accident report.

The pilot said there was an intermittent loss of engine power during cruise flight . He suspected carburetor icing "since the Stromberg carburetor, standard [equipment] on the Ercoupe 415C, is prone to icing," and he immediately applied carburetor heat. The carburetor air temperature gauge indicated 10 degrees C. The engine "continued a pattern of power off/power on/power off in cycles of 4 or 5 seconds." He left the carburetor heat on but soon realized that his rate of descent left insufficient altitude to arrive at the destination airport. He landed on rough desert terrain, extensively damaging both wings and the nose and left main landing gears. According to the Carburetor Icing Graph, a temperature of 12 degrees C. and a dew point of 4 degrees C. [as reported by the nearest weather observation station] could result in serious icing at glide power, and a temperature of 10 degrees C. (as reported by the pilot) could result in serious icing at cruise power.

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

The unsuitable terrain on which to make a forced landing. A contributing factors was the carburetor icing conditions.

Full narrative available

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