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ASN Wikibase Occurrence # 223904
Last updated: 15 February 2020
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Date:25-JAN-2019
Time:10:10 LT.
Type:Matternet M2 V9
Owner/operator:Matternet Inc
Registration: SUI-9909
C/n / msn:
Fatalities:Fatalities: 0 / Occupants: 0
Other fatalities:0
Aircraft damage: Written off (damaged beyond repair)
Category:Accident
Location:0,5 km NE of Landiwiese, Zürichsee -   Switzerland
Phase: En route
Nature:
Departure airport:Klinik im Park (KiP), Zürich
Destination airport:Zentral Labor Zürich (ZLZ)
Investigating agency: STSB Switzerland
Narrative:
The drone crashed into a lake while it was transporting blood samples from a hospital to a laboratory.

conclusions
It is highly probable that a short circuit occurred during the flight of the drone in a plug-in connection, which resulted in a failure of the 5 volt supply of the GPS receiver and other components. For this reason, the drone could no longer determine its own position and initiated an emergency landing according to the internal logic of the Flight Termination System (FTS). This took place, as planned, by switching off the four engines and expelling the emergency parachute.
Meteorological conditions or other external circumstances could be ruled out as the cause of the emergency landing.

Sources:

https://www.sust.admin.ch/inhalte/AV-berichte/SUI-9909_D.pdf

Accident investigation:
cover
  
Investigating agency: STSB Switzerland
Status: Investigation completed
Duration: 2 months
Download report: Final report


Revision history:

Date/timeContributorUpdates
12-Apr-2019 19:31 harro Added

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