# NTSB Accident CHI91FA254
> **CESSNA 172M** · 1991-08-06 · OTTUMWA, IA, USA · FATL
## Event
- **NTSB number:** CHI91FA254
- **Event ID:** 20001212X17801
- **Type:** Accident
- **Date:** 1991-08-06
- **Location:** OTTUMWA, IA, USA
- **Coordinates:** 41.010318, -92.409156
## Injuries
- **Highest injury:** FATL
- **Fatal:** 2
- **Serious:** 0
- **Minor:** 0
- **Uninjured:** 0
- **Total aboard:** 2
## Aircraft
- **Make:** CESSNA
- **Model:** 172M
- **Registration:** N61568
- **FAR Part:** 091
- **Engines:** 1
- **Damage:** DEST
## Conditions
- **Light:** DAYL
- **Weather:** IMC
## Probable cause

IMPROPER IFR PROCEDURE BY THE PILOT BY NOT MAINTAINING THE PROPER MINIMUM DESCENT ALTITUDE (MDA) UNTIL ESTABLISHED ON THE ILS LOCALIZER AND GLIDEPATH.

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*Source: [NTSB CAROL](https://data.ntsb.gov/carol-main-public/basic-search?source=ntsb&type=event&ntsb_number=CHI91FA254) · AI Analytics · CC0 1.0*