# NTSB Accident CHI94LA040
> **STEVEN ULRICH CHALLENGER II** · 1993-11-28 · ESCANABA, MI, USA · MINR
## Event
- **NTSB number:** CHI94LA040
- **Event ID:** 20001211X13723
- **Type:** Accident
- **Date:** 1993-11-28
- **Location:** ESCANABA, MI, USA
- **Coordinates:** 45.740066, -87.080612
## Injuries
- **Highest injury:** MINR
- **Fatal:** 0
- **Serious:** 0
- **Minor:** 1
- **Uninjured:** 0
- **Total aboard:** 1
## Aircraft
- **Make:** STEVEN ULRICH
- **Model:** CHALLENGER II
- **Registration:** N4285V
- **FAR Part:** 091
- **Engines:** 1
- **Damage:** SUBS
## Conditions
- **Light:** DAYL
- **Weather:** VMC
## Probable cause

INADEQUATE DIRECTIONAL STABILITY OF THE AIRCRAFT (DUE TO INSTALLATION OF LEXAN COCKPIT ENCLOSURE DOORS), WHICH PRECIPITATED A LOSS OF DIRECTIONAL CONTROL.

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*Source: [NTSB CAROL](https://data.ntsb.gov/carol-main-public/basic-search?source=ntsb&type=event&ntsb_number=CHI94LA040) · AI Analytics · CC0 1.0*