ASN Wikibase Occurrence # 188773
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| Date: | Wednesday 20 July 2016 |
| Time: | 12:15 LT |
| Type: |  Eurocopter AS 350B3 Ecureuil |
| Owner/operator: | HeliScan |
| Registration: | LN-OSN |
| MSN: | 4380 |
| Year of manufacture: | 2008 |
| Fatalities: | Fatalities: 0 / Occupants: 1 |
| Aircraft damage: | Minor |
| Category: | Accident |
| Location: | 3km N of Fossbakken, Troms -
 Norway
|
| Phase: | Take off |
| Nature: | External load operation |
| Departure airport: | |
| Investigating agency: | AIBN |
| Confidence Rating: |  Information verified through data from accident investigation authorities |
20 July 2016 aerial work was performed along a new power line near Fossbakken in Lavangen municipality in Troms county. During a landing to load off personnel, an external load was attached to the helicopter by longline without the commander being aware of it. At lift off, the long line tightened, and the commander experienced a jerk in the helicopter that made him decide to make an emergency landing in terrain with birch trees. The rotor blades and the landing gear sustained damage. Pilot was uninjured.
It emerged during the investigation that it was given an unclear message from the principal who gave room for the commander and task specialist to have different understanding of the task to be performed. This meant that task specialist, who believed that stringing of pilot lines was the next task, attached longline to the load hook. The commander had the notion that it should be transport of personnel from a mast point along the power line. This caused the helicopter to take off in such a way that there was a strong pull due to the weight that hung in longline when it was tightened.
Accident investigation:
 |
|
Sources:
http://www.blv.no/nyheter/hard-landing-med-helikopter-1.2006383
https://www.nordlys.no/helse/statnett/her-star-helikopteret-midt-inne-i-skogen/s/5-34-454417
https://www.folkebladet.no/nyheter/2016/07/20/Helikopterpilot-sendt-til-lege-13063912.ece
http://www.aircraftregister.net/aircrafts/1324/LN-OSN
https://www.airplane-pictures.net/photo/531889/ln-osn-heliscan-eurocopter-as350-ecureuil-squirrel/
http://aerossurance.com/helicopters/unexpected-load-as350b3-usl/
https://www.aibn.no/Aviation/Published-reports/2017-02
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 20-Jul-2016 13:51 | gerard57 | Added |
| 20-Jul-2016 13:57 | harro | Updated [Aircraft type, Registration, Operator, Location, Source, Narrative] |
| 20-Jul-2016 14:35 | Geno | Updated [Time, Cn, Location, Phase, Source, Damage] |
| 20-Jul-2016 18:03 | Aerossurance | Updated [Time, Aircraft type, Location, Phase, Nature, Narrative] |
| 20-Jul-2016 19:13 | CTYONE | Updated [Aircraft type] |
| 04-Feb-2017 14:26 | Aerossurance | Updated [Time, Phase, Narrative] |
| 04-Feb-2017 15:22 | Aerossurance | Updated [Source] |
| 11-Sep-2020 18:30 | harro | Updated [Narrative, Accident report, Accident report, ] |
Corrections or additions? ... Edit this accident description
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