# NTSB Accident CHI91LA184
> **PIPER PA-28-140** · 1991-06-09 · GRASS LAKE, MI, USA · MINR
## Event
- **NTSB number:** CHI91LA184
- **Event ID:** 20001212X17216
- **Type:** Accident
- **Date:** 1991-06-09
- **Location:** GRASS LAKE, MI, USA
- **Coordinates:** 42.250637, -84.199203
## Injuries
- **Highest injury:** MINR
- **Fatal:** 0
- **Serious:** 0
- **Minor:** 2
- **Uninjured:** 1
- **Total aboard:** 3
## Aircraft
- **Make:** PIPER
- **Model:** PA-28-140
- **Registration:** N7470R
- **FAR Part:** 091
- **Engines:** 1
- **Damage:** SUBS
## Conditions
- **Light:** DAYL
- **Weather:** VMC
## Probable cause

A RUPTURED OIL COOLER LINE. A FACTOR ASSOCIATED WITH THE ACCIDENT WAS THE LACK OF SUITABLE TERRAIN FOR THE PRECAUTIONARY LANDING.

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*Source: [NTSB CAROL](https://data.ntsb.gov/carol-main-public/basic-search?source=ntsb&type=event&ntsb_number=CHI91LA184) · AI Analytics · CC0 1.0*