Aviation Accident Summary ANC90LA019

BECKY LAKE, AK, USA

Aircraft #1

N6220M

MAULE M-5

Analysis

SKI FORWARD ATTACHED FITTING (MAULE P/N 9027B) FOR LEFT SKI SAFETY & RIGGING CABLES FAILED IN FATIGUE. DURING SKI INSTALLATION IN 1985, ONE OF THE FITTINGS WAS MISSING & HAD TO BE FABRICATED LOCALLY. TESTS INDICATED FITTING MADE FROM WRONG STEEL.

Probable Cause and Findings

FATIGUE FAILURE OF THE SKI ATTACH FITTING DUE TO BEING FABRICATED LOCALLY FROM THE WRONG STEEL WHICH RESULTED IN THE AIRPLANE NOSING OVER.

 

Source: NTSB Aviation Accident Database

Get all the details on your iPhone or iPad with:

Aviation Accidents App

In-Depth Access to Aviation Accident Reports