# NTSB Accident CEN24LA038
> **Bede Corp BD-4** · 2023-11-14 · Lowell, IN, USA · MINR
## Event
- **NTSB number:** CEN24LA038
- **Event ID:** 20231120193402
- **Type:** Accident
- **Date:** 2023-11-14
- **Location:** Lowell, IN, USA
- **Coordinates:** 41.17, -87.25
## Injuries
- **Highest injury:** MINR
- **Fatal:** 0
- **Serious:** 0
- **Minor:** 1
- **Uninjured:** 0
- **Total aboard:** 1
## Aircraft
- **Make:** Bede Corp
- **Model:** BD-4
- **Registration:** N931AS
- **FAR Part:** 091
- **Engines:** 1
- **Damage:** SUBS
## Conditions
- **Light:** DAYL
- **Weather:** VMC
## Probable cause

Fatigue cracking of the propeller blade root, which resulted in the in-flight separation of the propeller blade from its root. Contributing to the accident was the improper machining of the blade root threads, which resulted in chatter/ratchet marks that weakened the strength of the blade root.

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*Source: [NTSB CAROL](https://data.ntsb.gov/carol-main-public/basic-search?source=ntsb&type=event&ntsb_number=CEN24LA038) · AI Analytics · CC0 1.0*