Aviation Accident Summaries

Aviation Accident Summary SEA85LA097

MYRTLE POINT, OR, USA

Aircraft #1

N99GM

HILLER 12E

Analysis

DURING A CFR 137 FLIGHT A TOTAL LOSS OF POWER OCCURRED WITH AN AUDIBLE SCREECH COMING FORM THE ENGINE AREA. AUTOROTATION WAS MADE AND THE ACFT WAS LANDED INTO A HEVILY TREED AREA WITH STEEP TERRAIN. DURING ENGINE TEAR DOWN A FRACTURED IMPELLER WAS FOUND. METALLURGICAL ANALYSIS REVEALED THAT THE FRACTURED IMPELLER WAS DUE TO PROGRESSION OF A PRE-EXISTING FATIGUE CRACK IN THE IMPELLER.

 

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