Accident ARACE SIRIN ZT-YFW, Monday 10 July 2023
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Date:Monday 10 July 2023
Time:23:25 UTC
Registration: ZT-YFW
Fatalities:Fatalities: 0 / Occupants: 0
Other fatalities:0
Aircraft damage: Minor
Location:Dipaleseng -   South Africa
Phase: Unknown
Departure airport:Dipaleseng near Balfour
Destination airport:Dipaleseng near Balfour
Investigating agency: CAA S.A.
Confidence Rating: Accident investigation report completed and information captured
On Thursday, 10 July 2023 at approximately 2300Z, an Arace Sirin Unmanned Aircraft Systems (UAS) with registration ZT-YFW was engaged in a surveillance flight at Dipaleseng near Balfour, Mpumalanga province. The flight was conducted under beyond visual line of sight (BVLOS) rules at night and under the provisions of Part 101 of the Civil Aviation Regulations (CAR) 2011 as amended.
According to the pilot, a pre-flight inspection was conducted with no anomalies found. The waypoints of the flight route were set. The UAS was launched with 99% battery power and, thereafter, it climbed to 394 feet (ft) above ground level (AGL). Approximately 16 minutes into the flight whilst at about 9.7 kilometres (km) from the launch position, the pilot noticed what looked like an interruption on his video feed and, soon after, the UAS impacted the power line pole. The pilot traced the UAS to the last recorded location and found it crashed on the ground.
The UAS sustained damage to the right front landing gear; there were no injuries on the ground or damage to property.

Probable Cause(s)
The UAS impacted the high-tension wires during a night operation in an area with rising terrain, which resulted in a crash.
Contributing Factor(s)
Poor flight planning as rising terrain risk was not considered.

Accident investigation:
Investigating agency: CAA S.A.
Report number: CA18/3/2/10348
Status: Investigation completed
Duration: 5 months
Download report: Final report




Revision history:

30-Jan-2024 10:43 ASN Added
30-Jan-2024 10:44 harro Updated [Aircraft type, Total occupants, Other fatalities, Location, Nature, Damage, Narrative, Plane category]

Corrections or additions? ... Edit this accident description

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