# Accident 20190827011709A: Brookfield, WI, August 27, 2019

- Type: FAA accident report (Accident/Incident Data System), as reported
- Date: August 27, 2019, 16:00 local time
- Place: Brookfield, WI
- Damage: Minor damage
- Phase of flight: Hover/Holding
- Location: 43.0643° N, 88.1178° W: Placed by OpenAirDocs: center of Brookfield, WI, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=43.0643&lon=-88.1178&mi=10
- Aircraft: NONE (not matched to a registry record)
- People aboard: 0
- Fatal injuries: 0
- Other injuries: 0
- FAA source: FAA Aviation Safety Information Portal (https://asip.faa.gov/)
- Page: https://openairdocs.org/incident/20190827011709A

## Narrative

As the FAA filed it, in capitals; the FAA replaces private details with ^PRIVACY DATA OMITTED^.

ON AUGUST 27, 2019 AT APPROXIMATELY 1600 HOURS A SMALL UAS HAD A FAILURE DURING FLIGHT AND CRASHED STRIKING TWO PARKED VEHICLES IN THE PROCESS CAUSING PROPERTY DAMAGE THAT EXCEEDS $500.

THE SUAS WAS BEING OPERATED BY REMOTE PILOT IN COMMAND ^PRIVACY DATA OMITTED^ WHO WAS CONTRACTED BY MENET AERO TO PERFORM A TETHERED TRAFFIC ANALYSIS FLIGHT.  THE EVENT OCCURRED APPROXIMATELY 1 HOUR INTO THE PLANNED 3 HOUR FLIGHT.

EXAMINATION OF THE SUAS POST ACCIDENT SHOWED STRUCTURAL FAILURE SIMILAR TO FAILURES FOUND ON OTHER SUAS OF THE SAME MAKE AND MODEL VIA INTERNET SEARCH. SEVERAL ROTOR BLADES WERE BROKEN DUE TO IMPACT AS WELL ONE OF THE BOOMS THAT SUPPORTS THE MOTORS. ONE MOTOR WAS COMPLETELY SEPARATED FROM THE BROKEN BOOM. THE METAL BRACKET THAT JOINS TO BOOM TO THE MAIN STRUCTURE WAS CRAKED IN SEVERAL PLACES AS WELL.  EITHER A ROTOR OR AIRFRAME STRUCTURAL FAILURE OCCURRED DURING FLIGHT POSSIBLY DUE TO A MOMENTARY HIGH WIND GUST. THE FAILURE CAUSED THE AIRCRAFT TO GO INTO ITS LOST MOTOR FAILSAFE MODE WHERE IT SPINS AND DESCENDS UNTIL IMPACT.

UA FA REGISTRATION - FA3LXWRN9F

UA MAKE - DJI MAVIC 600 PRO

UA SERIAL NUMBER - M80DGB27030072

RPIC CERTIFICATE NUMBER - 3906474

## NTSB investigation

None matched to this report by aircraft and date. Search the NTSB's own records: https://data.ntsb.gov/carol-main-public/basic-search

From the FAA Accident/Incident Data System. Reports are matched to registry aircraft by N-number and event date, checked against the reported make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model. For accidents, the NTSB's own investigation is the fuller record.

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