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ASN Wikibase Occurrence # 178452
Last updated: 1 December 2021
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Time:14:05 LT
Type:Silhouette image of generic AS50 model; specific model in this crash may look slightly different
Eurocopter AS 350B3 Ecureuil
Owner/operator:Everjets, opf Autoridade Nacional de Protecção Civil
Registration: CS-HIA
MSN: 3699
Fatalities:Fatalities: 0 / Occupants: 6
Other fatalities:0
Aircraft damage: Written off (damaged beyond repair)
Location:Lapa, Refoios de Cima, Arcos de Valdevez, Minho -   Portugal
Phase: Landing
Nature:Fire fighting
Departure airport:Arcos de Valdevez
Destination airport:Arcos de Valdevez
Investigating agency: GPIAAF Portugal
The helicopter was returning from a fire fighting operation at Valença.
While attempting to land with tail wind in gusty conditions the helicopter sank and despite the pilot efforts the tail rotor ended up striking the ground. Helicopter started to spin and crashed in a
local road.
The fuselage came to rest on its left hand side on a hillside. Two of the six occupants (1 pilot and five firemen) received minor injuries.

Probable causes:
Ineffective or non-existent risk analysis by the pilot in performing an unplanned approach and landing manoeuvre was identified as the probable cause for the accident.
Contributing factors:
The spirit of mission in pursuit of an objective understood by the pilot as a priority and underlined by the GIPS team.
The pilot’s degraded performance, consistent with the effects of some degree of fatigue, limited his ability to properly assess the risks during landing phase on mountainous region.
The meteorological conditions contributed to the accident due to the high temperatures and unstable atmosphere with gusty winds conditions.
The terrain orography may had also contributed to generate strong turbulence with downward gust on the south region of the hill, as significant wind was coming from the north.


Accident investigation:
Investigating agency: GPIAAF Portugal
Status: Investigation completed
Duration: 3 years and 7 months
Download report: Final report



Revision history:

09-Aug-2015 14:59 Fusko Added
09-Aug-2015 15:00 harro Updated [Aircraft type]
09-Aug-2015 18:09 Geno Updated [Registration, Cn, Other fatalities, Source]
10-Aug-2015 19:56 Aerossurance Updated [Narrative]
18-Aug-2015 22:11 Aerossurance Updated [Time, Phase, Source, Narrative]
01-Apr-2019 17:12 harro Updated [Operator, Narrative, Photo, Accident report, ]

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