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ASN Wikibase Occurrence # 213531
Last updated: 19 September 2021
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Date:20-JUL-2018
Time:08:33 LT
Type:Silhouette image of generic AS50 model; specific model in this crash may look slightly different
Aérospatiale AS 350B Écureuil
Owner/operator:Private
Registration: N36033
MSN: 1207
Fatalities:Fatalities: 0 / Occupants: 1
Other fatalities:0
Aircraft damage: Written off (damaged beyond repair)
Category:Accident
Location:Wolfsberg Flugplatz (LOKW), St Marein, Wolfsberg -   Austria
Phase: Taxi
Nature:Private
Departure airport:Wolfsberg Airport (LOKW)
Destination airport:Wolfsberg Airport (LOKW)
Investigating agency: UUS Austria
Narrative:
The helicopter was destroyed while attempting to relocate next to a fuelling station at Wolfsberg airfield. The pilot intended to move the helicopter closer as the length of the filling hose was insufficient to refuel the helicopter at the previously selected position. The helicopter touched the ground with the main rotor blades while hovering in the ground effect (HIGE). The pilot suffered minor injuries.

Probable causes:
- Loss of lateral control during hover in ground effect (HIGE).
Probable factors:
- Excessive control inputs
- Flight crew induced oscillations about the helicopter longitudinal axis (PIO)
- Lack of corrective action to stop PIO
- Proximity of obstacles
- Formation of ground effect air vortices (IGE)

Sources:

https://kaernten.orf.at/news/stories/2925606/
https://www.bmk.gv.at/dam/jcr:367ae7e8-02b8-49b4-87c4-58b833df54e8/180720_zb_aerospatiale_85263_zusatz.pdf
http://aerossurance.com/helicopters/hover-taxi-accident/
_____________________
http://registry.faa.gov/aircraftinquiry/NNum_Results.aspx?NNumbertxt=36033
https://www.helis.com/database/cn/25886/
http://www.austrianairfields.com/LOKW_Chart.pdf

Accident investigation:
cover
  
Investigating agency: UUS Austria
Status: Investigation completed
Duration: 2 years and 5 months
Download report: Final report
Location

Media:


Revision history:

Date/timeContributorUpdates
20-Jul-2018 14:25 Anon. Added
20-Jul-2018 14:26 harro Updated [Registration, Operator, Total fatalities]
20-Jul-2018 14:27 harro Updated [Aircraft type, Other fatalities]
20-Jul-2018 20:05 Iceman 29 Updated [Source, Embed code]
20-Jul-2018 20:18 Aerossurance Updated [Time, Aircraft type, Location, Embed code, Narrative]
30-Jul-2018 01:34 Geno Updated [Time, Location, Destination airport, Source]
22-Nov-2020 09:59 Aerossurance Updated [Time, Operator, Phase, Departure airport, Destination airport, Source, Damage, Narrative]
18-Dec-2020 21:03 harro Updated [Narrative, Category, Accident report]
19-Dec-2020 14:17 Aerossurance Updated [Source, Embed code, Accident report]

Corrections or additions? ... Edit this accident description