Pipistrel Virus SW 128 Capsizes During Takeoff at Gruyère

Casualties unknown • Gruyère Aérodrome (LSGT), FR, CH

A Pipistrel Virus SW 128 aircraft overturned on the runway during its takeoff roll at Gruyère Aerodrome, resulting in serious injuries to the pilot.

What happened

On July 9, 2021, at approximately 16:00 local time, a Pipistrel Virus SW 128, registered as HB-SYL, was engaged in a private flight under Visual Flight Rules (VFR) at Gruyère Aerodrome (LSGT). The aircraft was performing a departure and arrival sequence within the same airfield. During the takeoff roll, the aircraft experienced a loss of control and capsized, coming to rest on its back on the runway.

The investigation

The Swiss Transportation Safety Investigation Board (SUST) initiated an inquiry into the event to determine the circumstances surrounding the accident. The investigation focused on the sequence of events leading up to the aircraft overturning on the runway and the resulting impact.

Findings

  • The aircraft sustained heavy damage during the accident.
  • The pilot sustained serious injuries as a result of the capsize.
  • The primary event was the aircraft flipping over while still on the runway during the takeoff phase.

Probable cause

The aircraft overturned on its back during the takeoff roll, leading to significant airframe damage and serious injury to the pilot.

Frequently asked questions

What happened in the 2021-07-08 PIPISTREL D.O.O. AJDOVSCINA VIRUS SW 128 accident near Gruyère Aérodrome (LSGT), FR, CH?

A Pipistrel Virus SW 128 aircraft overturned on the runway during its takeoff roll at Gruyère Aerodrome, resulting in serious injuries to the pilot.

What aircraft was involved and where did it happen?

The accident on 2021-07-08 involved a PIPISTREL D.O.O. AJDOVSCINA VIRUS SW 128, registration HB-SYL, at Gruyère Aérodrome (LSGT), FR, CH.

What was the probable cause of the accident?

The aircraft overturned on its back during the takeoff roll, leading to significant airframe damage and serious injury to the pilot.

Investigation report by the Swiss Transportation Safety Investigation Board (STSB / SUST). Original record: https://www.sust.admin.ch/inhalte/AV-berichte/HB-SYL_D.pdf. This page is a structured re-presentation; facts and quotes are in the Swiss Transportation Safety Investigation Board (STSB), Switzerland.

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