# NTSB Accident CHI89LA141
> **CESSNA R172K** · 1989-07-22 · WISCONSIN DELLS, WI, USA · NONE
## Event
- **NTSB number:** CHI89LA141
- **Event ID:** 20001213X28777
- **Type:** Accident
- **Date:** 1989-07-22
- **Location:** WISCONSIN DELLS, WI, USA
- **Coordinates:** 43.620567, -89.770683
## Injuries
- **Highest injury:** NONE
- **Fatal:** 0
- **Serious:** 0
- **Minor:** 0
- **Uninjured:** 1
- **Total aboard:** 1
## Aircraft
- **Make:** CESSNA
- **Model:** R172K
- **Registration:** N736DA
- **FAR Part:** 091
- **Engines:** 1
- **Damage:** SUBS
## Conditions
- **Light:** DAYL
- **Weather:** VMC
## Probable cause

FAILURE OF THE PILOT TO INSURE THE OIL FILLER CAP WAS PROPERLY SECURED WHEN HE SERVICED THE AIRCRAFT BEFORE TAKEOFF, AND SUBSEQUENT LOSS OF OIL AND OIL EXHAUSTION.  THE TREE WAS CONSIDERED TO BE A CONTRIBUTING FACTOR.

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*Source: [NTSB CAROL](https://data.ntsb.gov/carol-main-public/basic-search?source=ntsb&type=event&ntsb_number=CHI89LA141) · AI Analytics · CC0 1.0*