# Accident 20220216020649A: Joby Aero Inc JAS4-2, Jolon, CA, February 16, 2022

- Type: FAA accident report (Accident/Incident Data System), as reported
- Date: February 16, 2022, 09:58 local time
- Place: Jolon, CA
- Airport: Hunter Liggett
- Damage: Destroyed
- Phase of flight: Cruise/Level Flight
- Operating rules: General operating rules (Part 91)
- Location: 35.9709° N, 121.1758° W: From the FAA
- Nearby events: https://openairdocs.org/map.md?lat=35.9709&lon=-121.1758&mi=10
- Aircraft: N542AJ, a cancelled registration (https://openairdocs.org/deregistered/N542AJ-2022-12-24) (OpenAirDocs)
- Registry model: Joby Aero JAS4-2 (registry code 05638TD, https://openairdocs.org/model/joby-aero-jas4-2) (OpenAirDocs)
- Registry engine: Amateur-built UNKNOWN ENG (registry code 99999, https://openairdocs.org/engine/amateur-built-unknown-eng) (OpenAirDocs)
- Reported make and model: JOBY AERO INC JAS4-2
- Reported engine: AMA/EXPR UNKNOWN ENG
- People aboard: 0
- Fatal injuries: 0
- Other injuries: 0
- NTSB investigation: [NTSB DCA22FA082](https://openairdocs.org/ntsb/DCA22FA082) (OpenAirDocs)
- FAA source: FAA Aviation Safety Information Portal (https://asip.faa.gov/)
- Page: https://openairdocs.org/incident/20220216020649A

## Narrative

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

FLIGHT TEST AIRCRAFT EXPERIENCED INFLIGHT PROPELLER FAILURE AND SUBSEQUENT LOSS OF CONTROL.

## The NTSB's investigation of this event (1)

From the NTSB's public API. Aircraft are matched to registry aircraft by N-number and event date, checked against the reported serial number, make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model.

- [NTSB DCA22FA082](https://openairdocs.org/ntsb/DCA22FA082), Feb 16, 2022: Joby Aero JAS4-2 (N542AJ), Jolon, CA, substantial damage. Probable cause: The separation of a propeller blade during expansion flight testing that resulted in cascading effects to include the separation of multiple propulsion motor/propeller assemblies and the loss of…

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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