# NTSB Accident DCA19LA154
> **AURORA PAV** · 2019-06-04 · Manassas, VA, USA · —
## Event
- **NTSB number:** DCA19LA154
- **Event ID:** 20190604X91518
- **Type:** Accident
- **Date:** 2019-06-04
- **Location:** Manassas, VA, USA
- **Coordinates:** 38.721942, -77.517776
## Injuries
- **Highest injury:** —
- **Fatal:** 0
- **Serious:** 0
- **Minor:** 0
- **Uninjured:** 0
- **Total aboard:** 0
## Aircraft
- **Make:** AURORA
- **Model:** PAV
- **Registration:** N83AU
- **FAR Part:** 091
- **Engines:** —
- **Damage:** SUBS
## Conditions
- **Light:** DAYL
- **Weather:** VMC
## Probable cause

a loss of hover lift thrust provided by the eight lift motors due to a false on-ground rotor speed reduction command, resulting from excessive vibration.

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*Source: [NTSB CAROL](https://data.ntsb.gov/carol-main-public/basic-search?source=ntsb&type=event&ntsb_number=DCA19LA154) · AI Analytics · CC0 1.0*