Aviation Accident Summaries

Aviation Accident Summary LAX91LA137

RICHVALE, CA, USA

Aircraft #1

N9894

SIKORSKY H-19/S55

Analysis

THE PILOT STATED THAT HE WAS DISPENSING HIS 20TH LOAD OF INSECT SPRAY OVER ALMOND TREES. DURING A SWATH RUN THE ENGINE LOST POWER AND THE HELICOPTER IMPACTED THE TREES AND THEN THE GROUND. THE ENGINE'S NUMBER 4 CYLINDER INTAKE VALVE KEEPER FAILED.

Probable Cause and Findings

THE FAILURE OF THE ENGINE'S NUMBER 4 CYLINDER INTAKE VALVE KEEPER. TREES UNDER THE HELICOPTER AT THE TIME OF THE LOSS OF ENGINE POWER WERE FACTORS IN THE ACCIDENT.

 

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