ASN Wikibase Occurrence # 73277
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| Date: | Saturday 16 September 2000 |
| Time: | 08:18 |
| Type: |  Aérospatiale SA 330J Puma |
| Owner/operator: | Ace Helicopter Co. |
| Registration: | JA6706 |
| MSN: | 1361 |
| Year of manufacture: | 1978 |
| Fatalities: | Fatalities: 2 / Occupants: 3 |
| Aircraft damage: | Destroyed |
| Category: | Accident |
| Location: | Tateyama-shi, Toyama-ken -
 Japan
|
| Phase: | Approach |
| Nature: | External load operation |
| Departure airport: | |
| Tengudaira-Kunimi Helipad | |
| Investigating agency: | JTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
Crashed at a temporary helipad in the mountains at Tengudaira-Kunimi during cargo sling operations and destroyed by fire.
It is considered that in this accident, the helicopter was carrying out cargo lift operations in severe turbulence and was transitioning to hover on final approach to the Loading Helipad, when it encountered a sudden change in air currents that caused it fell into an abrupt sink, as a result of which it impacted the ground hard.
The inadvertent abrupt sink while the helicopter was transitioning to hover were caused either by the helicopter entering a settling with power condition as the result of a sudden updraft which could not be recovered from due to insufficient height, or by the helicopter encountering a sudden downdraft and tail wind or crosswind and recovery actions not taking effect in time due to the low height above ground and the poor power response of the installed engine characteristics.
Accident investigation:
 |
|
Sources:
http://www.mlit.go.jp/jtsb/eng-air_report/JA6706.pdf
Images:
Photo: JTSB
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 03-Mar-2010 10:28 | TB | Added |
| 28-Sep-2010 05:12 | TB | Updated [Time, Operator, Total fatalities, Total occupants, Location, Phase, Nature, Destination airport, Source, Narrative] |
| 27-Oct-2012 07:48 | TB | Updated [Source, Narrative] |
| 22-Aug-2014 15:08 | Aerossurance | Updated [Narrative] |
| 26-Jan-2021 15:32 | harro | Updated [Accident report, Photo] |
Corrections or additions? ... Edit this accident description
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