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ASN Wikibase Occurrence # 215575
Last updated: 23 February 2020
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Date:12-AUG-2018
Time:11:35
Type:Silhouette image of generic AAT3 model; specific model in this crash may look slightly different
Aero AT-3
Owner/operator:Alp-Aircraft
Registration: HB-SRC
C/n / msn:
Fatalities:Fatalities: 0 / Occupants: 2
Other fatalities:0
Aircraft damage: None
Category:Serious incident
Location:Bern Airport (LSZB) -   Switzerland
Phase: Take off
Nature:Training
Departure airport:Bern Airport (LSZB)
Destination airport:Bern Airport (LSZB)
Investigating agency: STSB Switzerland
Narrative:
A Robinson R66 helicopter, HB-ZOK, had just crossed the runway on arrival at Bern Airport, Switzerand.
At the same time, an Aero AT-3 was performing a touch-and-go manoeuvre on runway 14.
At an altitude of about 10 meters the aircraft suddenly banked 70 to the left. The instructor took over control and regained control of the aircraft.
Causes:
The serious incident, which almost resulted in a crash of a light aircraft due to a loss of control, can be traced back to its entry into the wake turbulence of a helicopter. The insufficient awareness of the air traffic control and the crews of the danger of a helicopter's wake turbulence was identified as a causal factor.

Sources:

https://www.sust.admin.ch/inhalte/AV-berichte/2334.pdf

Accident investigation:
cover
  
Investigating agency: STSB Switzerland
Status: Investigation completed
Duration: 1 month
Download report: Final report


Revision history:

Date/timeContributorUpdates
22-Sep-2018 08:00 harro Added

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