ASN Wikibase Occurrence # 264863
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| Date: | Tuesday 6 August 2019 |
| Time: | 15:57 UTC |
| Type: | Parrot Anafi |
| Owner/operator: | West Yorkshire Police |
| Registration: | Unregistered |
| MSN: | D000316 |
| Fatalities: | Fatalities: 0 / Occupants: 0 |
| Aircraft damage: | Substantial |
| Location: | Industrial Road, Sowerby Bridge, Halifax, West Yorkshire. -
 United Kingdom
|
| Phase: | En route |
| Nature: | Aerial patrol |
| Departure airport: | Sowerby Bridge, Halifax, West Yorkshire |
| Confidence Rating: |  Information verified through data from accident investigation authorities |
AAIB investigation to Parrot (UAS, registration n/a): Loss of control of the UAS which impacted Industrial Road, Sowerby Bridge, Halifax, Yorkshire, 6 August 2019. The AAIB Final Report was published on 14 November 2019, and the following is an excerpt from it
"The UAS was being operated by the emergency services in response to a serious incident requiring an urgent search for a missing person along a canal path. An elevated position in a small, quietly populated cul-de sac was chosen from which to operate the UAS, with a good line of sight visibility of the search area. The weather was good, clear and sunny with a wind of about 14 kt, gusting 28 kt and an OAT of 22˚C. There were no pedestrians in the operating area and no vehicular traffic.
The UAS made a normal takeoff and responded correctly to the control inputs made by the operator. It was manoeuvred towards the canal area at an altitude of about 60 m, continuing to respond correctly to the control inputs. It was brought to a hover for the operator to survey the general area and select a suitable flight area to clear the canal towpath.
Whilst surveying the area, and approximately 45 seconds into the flight, the operator experienced vibrations from the UAS which were evident in the camera image feed. The operator performed a 360˚ turn of the UAS in order to check control, which was effective. However, seconds later, control inputs did not have the desired or expected response from the UAS. It continued to vibrate heavily and began to move erratically and manoeuvre itself without control inputs. With the UAS facing away from him, the operator attempted to manoeuvre it backwards towards him, but it flipped uncontrollably resulting in an uncontrolled descent, impacting a small residential street. The total flight time was 1 minute and 21 seconds. There were no injuries to persons or damage to property on the ground, but the UAS suffered extensive damage. No cause for the loss of control was identified."
=Damage sustained to airframe=
Per the above AAIB Report "Damage to propellers and camera mount"
Sources:
1. AAIB Final Report: https://assets.publishing.service.gov.uk/media/5f463b668fa8f51f81a1848b/Parrot_UAS_060819_11-19.pdf
2. https://www.westyorkshire.police.uk/about-us/our-departments/drone-support/drone-support
3. https://en.wikipedia.org/wiki/Sowerby_Bridge
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 28-Jun-2021 22:20 | Dr. John Smith | Added |
Corrections or additions? ... Edit this accident description
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