# NTSB Accident CHI08CA177
> **Robinson R44 II** · 2008-07-04 · Ottawa, IL, USA · NONE
## Event
- **NTSB number:** CHI08CA177
- **Event ID:** 20080815X01250
- **Type:** Accident
- **Date:** 2008-07-04
- **Location:** Ottawa, IL, USA
- **Coordinates:** 41.399723, -88.793891
## Injuries
- **Highest injury:** NONE
- **Fatal:** 0
- **Serious:** 0
- **Minor:** 0
- **Uninjured:** 4
- **Total aboard:** 4
## Aircraft
- **Make:** Robinson
- **Model:** R44 II
- **Registration:** N31138
- **FAR Part:** 091
- **Engines:** 1
- **Damage:** SUBS
## Conditions
- **Light:** DAYL
- **Weather:** VMC
## Probable cause

The pilot's failure to maintain clearance from the power transmission lines.  Contributing to the accident was the unmarked power transmission lines.

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*Source: [NTSB CAROL](https://data.ntsb.gov/carol-main-public/basic-search?source=ntsb&type=event&ntsb_number=CHI08CA177) · AI Analytics · CC0 1.0*