ASN Wikibase Occurrence # 264860
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| Date: | Monday 14 January 2019 |
| Time: | 11:03 UTC |
| Type: | DJI Matrice 210RTK |
| Owner/operator: | Private |
| Registration: | Unregistered |
| MSN: | EK290958468403 |
| Fatalities: | Fatalities: 0 / Occupants: 0 |
| Aircraft damage: | Destroyed |
| Location: | Colwyn Bay (Bae Colwyn), Conway, Clywd -
 United Kingdom
|
| Phase: | En route |
| Nature: | Survey |
| Departure airport: | Colwyn Bay (Bae Colwyn), Conway, Clywd |
| Colwyn Bay (Bae Colwyn), Conway, Clywd | |
| Confidence Rating: |  Information verified through data from accident investigation authorities |
AAIB investigation to DJI Matrice 210RTK, UAS, registration n/a: Uncontrolled descent into terrain, Colwyn Bay, Conwy, 14 January 2019. The AAIB Final Report was published on 11 July 2019, and the following is the summary from it:
"The unmanned aircraft system (UAS) was fitted with a third-party lidar pod for its planned survey mission which involved flights of around 8 minutes duration. As it commenced its pre-programmed route, it appeared to continue to climb above the 30-metre height that had been set. The remote pilots observed that is was too high and attempted to land it immediately. The aircraft appeared unresponsive to the remote pilot’s inputs and it then commenced an uncontrolled descent, rapidly increasing speed, until it struck the ground."
=Damage Sustained to Airframe=
Per the above AAIB Report "Extensive damage to aircraft and payload"
=AAIB Conclusion=
The aircraft was being flown with a payload which unintentionally meant it was being flown above its maximum specified weight. This could have caused the high load on the batteries which may have been the reason for the battery warning during its ascent.
In response to this warning the remote pilots commanded a return to home which the UAS initially followed, but it then transitioned to a manual P-GPS mode and entered an uncontrolled descent to the ground. The autonomous flight app being used did not list this type on its list of compatible UAS’"
Sources:
1. AAIB Final Report: https://assets.publishing.service.gov.uk/media/5f468244e90e072998b54c72/DJI_Matrice_210RTK_UAS_07-19.pdf
2. https://www.northwalespioneer.co.uk/news/17766184.drone-crashed-colwyn-bay-heavy/
3. https://www.dailypost.co.uk/news/north-wales-news/overweight-drone-smashed-ground-220ft-16578601
4. https://en.wikipedia.org/wiki/Colwyn_Bay
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 28-Jun-2021 21:46 | Dr. John Smith | Added |
Corrections or additions? ... Edit this accident description
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