ASN Wikibase Occurrence # 226848
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Date: | Monday 24 June 2019 |
Time: | 16:31 UTC |
Type: | Eurocopter AS 350B-3 Ecureuil |
Owner/operator: | Air Greenland |
Registration: | OY-HGT |
MSN: | 4279 |
Fatalities: | Fatalities: 0 / Occupants: 1 |
Aircraft damage: | Substantial |
Category: | Accident |
Location: | Dye 1 radiostation, Qaqatoqaq Mountain -
Greenland
|
Phase: | En route |
Nature: | External load operation |
Departure airport: | |
Destination airport: | |
Investigating agency: | HCLJ |
Confidence Rating: | Information verified through data from accident investigation authorities |
Narrative:During a sling operation of a fuel tank to a telesite station on a mountaintop, the helicopter, while positioning for the agreed-upon delivery point, entered orographic clouds causing loss of pilot external visual references.
While attempting to recover, loss of external visual cues led to spatial disorientation and a partial loss of control of the helicopter.
Downhill on a southerly track, the fuel tank, at the end of the 30-meter long line, started colliding with rocky terrain.
After a cargo hook release of the fuel tank, and on a position approximately 100 meters (m) downhill, the helicopter skids impacted with rocky terrain, and the long line entangled with rocks.
The helicopter ended up on its right-hand side with the nose section facing towards the telesite.
CONCLUSIONS:
The helicopter, while positioning for the agreed-upon delivery point, entered orographic clouds causing loss of pilot external visual references. While attempting to recover, loss of external visual cues led to spatial disorientation and a partial loss of control of the helicopter.
Accident investigation:
|
| |
Investigating agency: | HCLJ |
Report number: | |
Status: | Investigation completed |
Duration: | 6 months |
Download report: | Final report |
|
Sources:
https://www.bea.aero/en/investigation-reports/notified-events/detail/event/accident-de-lairbus-as350-immatricule-oy-hgt-survenu-le-24062019-pres-de-la-station-dye-1-enquet/ http://aerossurance.com/helicopters/inadvertent-imc-mountain-heslo/ https://en.havarikommissionen.dk/aviation-archive/2020/2019-283/ Location
Media:
Revision history:
Date/time | Contributor | Updates |
06-Jul-2019 17:54 |
harro |
Added |
13-Jan-2020 15:20 |
Aerossurance |
Updated [Total occupants, Location, Nature, Source] |
13-Jan-2020 17:17 |
harro |
Updated [Time, Narrative, Accident report, ] |
08-Aug-2020 14:05 |
Aerossurance |
Updated [Source, Embed code] |
08-Aug-2020 14:05 |
Aerossurance |
Updated [Embed code, Plane category] |
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