Aviation Accident Summaries

Aviation Accident Summary CHI94LA091

LA CROSSE, WI, USA

Aircraft #1

N704CE

CESSNA 150M

Analysis

THE FLIGHT INSTRUCTOR AND STUDENT WERE PRACTICING STEEP TURNS WHEN THE AIRPLANE'S ENGINE LOST ALL POWER. THE FLIGHT INSTRUCTOR MADE A FORCED LANDING ON A SNOW COVERED FIELD. THE AIRPLANE NOSED OVER DURING THE LANDING ROLL. INVESTIGATION DISCLOSED A FRACTURED EXHAUST VALVE IN THE NUMBER ONE CYLINDER.

Factual Information

On February 18, 1994, about 1030 central standard time, a Cessna 150 airplane, N704CE, sustained substantial damage following a loss of engine power and forced landing in a field near La Crosse, Wisconsin. The certificated flight instructor and student pilot aboard were not injured. The local instructional flight operated under 14 CFR Part 91 without flight plan in visual meteorological conditions. The flight departed Winona, Minnesota, about 1000. In a statement made to the FAA, the flight instructor states he and his student were practicing steep turns when they experienced a complete loss of engine power. A forced landing was initiated onto a snow covered field. After touchdown the airplane nosed over and came to rest inverted. Postaccident examination of the engine revealed the exhaust valve in the number one cylinder had fractured.

Probable Cause and Findings

THE FAILURE OF THE EXHAUST VALVE IN THE NUMBER ONE CYLINDER. THE LACK OF SUITABLE TERRAIN FOR THE FORCED LANDING WAS A FACTOR IN THE ACCIDENT.

 

Source: NTSB Aviation Accident Database

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