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ASN Wikibase Occurrence # 30451
Last updated: 28 August 2021
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Date:05-AUG-1998
Time:07:40 LT
Type:Silhouette image of generic B06 model; specific model in this crash may look slightly different
Bell 206B-3 JetRanger III
Owner/operator:Imperial Koku K.K. Aviation Service
Registration: JA9479
MSN: 2396
Fatalities:Fatalities: 1 / Occupants: 1
Other fatalities:0
Aircraft damage: Written off (damaged beyond repair)
Category:Accident
Location:River Akashi, Nishinarita -   Japan
Phase: Manoeuvring (airshow, firefighting, ag.ops.)
Nature:Agricultural
Departure airport:
Destination airport:
Investigating agency: JTSB
Narrative:
Written off (damaged beyond repair) 5 August 1998 when crashed into the River Akashi, Nishinarita, Japan. The helicopter was destroyed when it collided with the guy wire of a telegraph pole, went out of control and crashed, during a spray run. The pilot - the sole person on board - sustained fatal injuries.

It is highly probable that this accident was caused by the aircraft colliding with a guy wire of a utility pole and crashing during a chemical spray flight.
Regarding the collision of the aircraft with the branch line, it was involved that the captain did not fully recognize the existence of the guy wire of the utility pole because the captain did not conduct a preliminary confirmation survey of the linear obstacle from the ground.

Sources:

1. http://www.bellhelicopter.com/MungoBlobs/925/478/destroyed.pdf
2. http://www.rotorspot.nl/historic/ja.php
3. https://www.mlit.go.jp/jtsb/aircraft/rep-acci/99-1-JA9479.pdf

Accident investigation:
cover
  
Investigating agency: JTSB
Status: Investigation completed
Duration:
Download report: Final report


Revision history:

Date/timeContributorUpdates
27-Sep-2008 01:00 ASN archive Added
12-Apr-2015 13:07 Dr. John Smith Updated [Total fatalities, Other fatalities, Country, Source, Damage, Narrative]
26-Aug-2016 14:52 Dr.John Smith Updated [Time, Operator, Total fatalities, Total occupants, Location, Phase, Nature, Source, Narrative]
26-Aug-2016 14:55 Dr.John Smith Updated [Date, Narrative]
13-Sep-2020 07:36 KagurazakaHanayo Updated [Source]
13-Sep-2020 07:39 harro Updated [Source, Narrative, Accident report, ]

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