Probable cause
The malfunction of the throttle servo which resulted in the complete loss of engine power.
NTSB analysis
The operator of the unmanned aircraft system (UAS) reported that during a test flight, the throttle servo malfunction resulting in complete loss of engine power. The pilot was able to maneuver the UAS to a safe location where it impacted terrain, resulting in substantial damage to the fuselage and flight control surfaces.
Text from the NTSB. Open the NTSB docket for WPR25LA135 for the full record.
Event
- Date
- Apr 8, 2025
- Type
- Accident
- Place
- Douglas, Arizona
- Nearest airport
- Bisbee Douglas Intl (DUG)
- Highest injury
- None
- Weather
- Visual (VMC)
- Light
- Day
VBAT
- N-number
- N443VA
- Category
- Airplane
- Year built
- 2022
- Damage
- Substantial
- Operating rule
- Part 91 (general aviation)
- Purpose of flight
- Flight test
From the NTSB aviation accident database: N-registered aircraft, events since 2008, data through Oct 28, 2026. The file is published monthly, so the latest weeks are incomplete and recent records can change. The official source is the NTSB aviation investigation search. CheckAero is independent and not affiliated with the NTSB.