Accident Yamaha RMAX L17 S7044, 03 Aug 2009
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ASN Wikibase Occurrence # 169200
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Time:14:30 LT
Type:Yamaha RMAX L17
Owner/operator:Osu Agricultural Cooperative
Registration: S7044
Fatalities:Fatalities: 0 / Occupants: 0
Other fatalities:1
Aircraft damage: Substantial
Location:Imsil-gun, Jeollabuk-do -   South Korea
Phase: Take off
Departure airport:
Destination airport:
Investigating agency: ARAIB
Confidence Rating: Accident investigation report completed and information captured
An unmanned rotorcraft use for aerial spray collided with the pilot (causing fatal injury) and crashed into terrain during backward moving after a hovering takeoff for aerial spray on the rice paddies.

The Aviation and Railway Accident Investigation Board determines that the cause of this accident was:
1. An inadequate setting of pitch trim switch at the pitch up unit was not recognized and corrected, and the rearward movement of the rotorcraft was not properly controlled.

Contributing to this accident were :
1. The safety regulations of the Osu AC regarding the aerial spray work were insufficient and the supervision of the safety management did not work properly.
2. There was no items checking if the trim switches were set at the 'zero' position, in the Operator's Manual
3. A 15 m of safety distance was considered to be not sufficient to provide the pilots with enough protection against abnormal movement of the unmanned rotorcraft.
4. There was no method and requirements of training for the pilot to keep up with their proficiency after the initial training.


Accident investigation:
Investigating agency: ARAIB
Status: Investigation completed
Download report: Final report

Revision history:

26-Aug-2014 12:02 Aerossurance Added
17-Sep-2018 18:22 Anon. Updated [Date]
21-Oct-2018 14:19 harro Updated [Source, Accident report, ]

Corrections or additions? ... Edit this accident description

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