AAIB investigation to DJI Matrice 210 RTK (UAS, registration n/a) 18 July 2018

Loss of power due to erroneously high battery state of charge, Farmer’s field, Keith, Aberdeenshire, 18 July 2018.

• From: Air Accidents Investigation Branch
• Published: 14 November 2019

• Category: Unmanned Aircraft Systems (UAS)
• Report type: Bulletin - Correspondence investigation
• Date of occurrence: 18 July 2018
• Aircraft type: DJI Matrice 210 RTK
• Location: Farmer’s field, Keith, Aberdeenshire
• Registration: n/a

Summary:

After about five minutes into the flight, a battery low voltage condition was detected by the UAS causing it to go into an automatic landing mode. Seventeen seconds later, while the aircraft was 25 m above the ground, it powered down and the electric motors stopped, causing it to fall to the ground. The batteries’ State of Charge (SOC) was indicating that an erroneously high amount charge remained. The cause of the erroneously high SOC is discussed in the report on the accident to DJI Matrice 210 on 4 September 2018 (see EW/G2018/09/04, AAIB Bulletin 11/2019).

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DJI Matrice 210 RTK (UAS, registration n/a) 11-19

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Glossary of abbreviations

Published 14 November 2019