# NTSB Accident CHI90DEG01
> **MCCOMB RV-4** · 1989-10-31 · EATON, OH, USA · FATL
## Event
- **NTSB number:** CHI90DEG01
- **Event ID:** 20001213X29548
- **Type:** Accident
- **Date:** 1989-10-31
- **Location:** EATON, OH, USA
- **Coordinates:** 39.739944, -84.630477
## Injuries
- **Highest injury:** FATL
- **Fatal:** 2
- **Serious:** 0
- **Minor:** 0
- **Uninjured:** 0
- **Total aboard:** 2
## Aircraft
- **Make:** MCCOMB
- **Model:** RV-4
- **Registration:** N828BM
- **FAR Part:** 091
- **Engines:** 1
- **Damage:** DEST
## Conditions
- **Light:** NDRK
- **Weather:** VMC
## Probable cause

POOR IN-FLIGHT PLANNING/DECISION BY THE PILOT WHICH RESULTED IN SPATIAL DISORIENTATION AND AN INADVERTENT SPIRAL. FACTORS RELATED TO THE ACCIDENT WERE: THE DARK NIGHT AND INSTRUMENT LIGHTS NOT INSTALLED.

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*Source: [NTSB CAROL](https://data.ntsb.gov/carol-main-public/basic-search?source=ntsb&type=event&ntsb_number=CHI90DEG01) · AI Analytics · CC0 1.0*