# NTSB Accident ERA17LA194
> **AVIONS MUDRY CIE CAP 231** · 2017-05-27 · Lebanon, PA, USA · NONE
## Event
- **NTSB number:** ERA17LA194
- **Event ID:** 20170530X94052
- **Type:** Accident
- **Date:** 2017-05-27
- **Location:** Lebanon, PA, USA
- **Coordinates:** 40.289165, -76.33361
## Injuries
- **Highest injury:** NONE
- **Fatal:** 0
- **Serious:** 0
- **Minor:** 0
- **Uninjured:** 1
- **Total aboard:** 1
## Aircraft
- **Make:** AVIONS MUDRY CIE
- **Model:** CAP 231
- **Registration:** N231X
- **FAR Part:** 091
- **Engines:** 1
- **Damage:** SUBS
## Conditions
- **Light:** DAYL
- **Weather:** VMC
## Probable cause

The partial separation of one counterweight and the subsequent seizure of the engine due to mechanical interference. Contributing to the partial separation of the counterweight was the overstress fracture of a retaining ring and the fatigue fracture of the counterweight washer for reasons that could not be determined based on the available evidence.

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*Source: [NTSB CAROL](https://data.ntsb.gov/carol-main-public/basic-search?source=ntsb&type=event&ntsb_number=ERA17LA194) · AI Analytics · CC0 1.0*