ASN Wikibase Occurrence # 264867
This information is added by users of ASN. Neither ASN nor the Flight Safety Foundation are responsible for the completeness or correctness of this information.
If you feel this information is incomplete or incorrect, you can submit corrected information.
| Date: | Saturday 20 October 2018 |
| Time: | 13:40 UTC |
| Type: | DJI Matrice 210RTK |
| Owner/operator: | Greater Manchester Police |
| Registration: | Unregistered |
| MSN: | 0N4DF6L021005 |
| Fatalities: | Fatalities: 0 / Occupants: 0 |
| Aircraft damage: | Substantial |
| Location: | Piccadilly Gardens, Manchester City Centre -
 United Kingdom
|
| Phase: | En route |
| Nature: | Aerial patrol |
| Departure airport: | Manchester City Centre |
| Manchester City Centre | |
| Confidence Rating: |  Information verified through data from accident investigation authorities |
AAIB investigation to DJI Matrice 210 RTK (UAS, registration n/a): Loss of power due to erroneously high reported battery state of charge, Piccadilly Gardens, Manchester City Centre, 20 October 2018. The AAIB Final Report was published on 14 November 2019, and the following is the summary from it:
"The operator deployed the DJI Matrice 210 RTK unmanned aircraft system in the City Centre of Manchester. Whilst the aircraft was in a static hover at 260 ft above the takeoff point with an estimated remaining flight time of 12 minutes and 9 seconds displayed on the controller, the aircraft suddenly descended and slewed sideways uncontrollably. It hit the ground causing extensive damage to the airframe, batteries and cameras. No persons or other property were hit by the aircraft.
Analysis confirmed that one of the batteries was indicating an erroneously high state of charge (SOC) and the aircraft had initiated automatic landing due to critically low battery voltage. It subsequently lost all power less than 2.5 seconds later, which resulted in an uncontrolled descent followed by impact with the ground".
=Damage Sustained to airframe
Per the above AAIB Report: "Extensive damage to the airframe, batteries and cameras".
=AAIB Analysis=
"The manufacturer’s initial analysis confirmed that the battery firmware was the latest version v01.00.00.71; it concluded that the aircraft had initiated landing automatically ‘due to critically low voltage’ and the subsequent uncontrolled descent, which resulted in impact with the ground, occurred once the aircraft had lost all power. The manufacturer identified that the firmware of one of the batteries was reporting an erroneously high SOC (State Of Chaerge) for the voltage. The cause of the erroneous SOC (State of Charge) is further discussed in the report on the accident to DJI Matrice 210 on 4 September 2018"
Piccadilly Gardens is a green space in Manchester city centre, England, between Market Street and the edge of the Northern Quarter. Piccadilly runs eastwards from the junction of Market Street with Mosley Street to the junction of London Road with Ducie Street; to the south are the gardens and paved areas. The reason for the use of the DJI Matrice 210 drone was aerial patrol/crowd control; at the time, there was a demonstration organised by the EDL (English Defence League) in progress.
Sources:
1. AAIB Final Report: https://assets.publishing.service.gov.uk/media/5f462839d3bf7f699c4c1c2f/DJI_Matrice_210_RTK_UAS_201018_11-19.pdf
2. https://en.wikipedia.org/wiki/Piccadilly_Gardens
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 28-Jun-2021 22:51 | Dr. John Smith | Added |
| 28-Jun-2021 22:52 | Dr. John Smith | Updated [Aircraft type] |
Corrections or additions? ... Edit this accident description
The Aviation Safety Network is an exclusive service provided by:
Quick Links:
| ASN Home | Send Correction / Feedback |
| FSF Home | Disclaimer | Copyright |
| Contact Us | Privacy Policy |
| Press / Media |
CONNECT WITH US:
©2024 Flight Safety Foundation