Aviation Accident Summary SEA89LA121

COLFAX, WA, USA

Aircraft #1

N8974H

GRUMMAN-SCHWEIZER G-164A

Analysis

WHILE ON AN AERIAL APPLICATION FLIGHT, THE ACFT ENGINE QUIT. THE AIRCRAFT IMPACTED ROUGH TERRAIN ON FORCED LANDING AND NOSED OVER. EXAMINATION OF THE ENGINE REVEALED LOOSE MOUNTING NUTS ON THE NO 4 CYLINDER.

Probable Cause and Findings

IMPROPER INSTALLATION OF THE CYLINDER ASSEMBLY. THE TERRAIN WAS NOT SUITABLE FOR A SUCCESSFUL FORCED LANDING.

 

Source: NTSB Aviation Accident Database

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