# NTSB Accident CHI05LA179
> **Boeing 737-7H4** · 2005-07-08 · Chicago, IL, USA · NONE
## Event
- **NTSB number:** CHI05LA179
- **Event ID:** 20050713X01012
- **Type:** Accident
- **Date:** 2005-07-08
- **Location:** Chicago, IL, USA
- **Coordinates:** 41.785831, -87.752502
## Injuries
- **Highest injury:** NONE
- **Fatal:** 0
- **Serious:** 0
- **Minor:** 0
- **Uninjured:** 110
- **Total aboard:** 110
## Aircraft
- **Make:** Boeing
- **Model:** 737-7H4
- **Registration:** N494WN
- **FAR Part:** 121
- **Engines:** 2
- **Damage:** SUBS
## Conditions
- **Light:** DAYL
- **Weather:** VMC
## Probable cause

The pushback tow driver not maintaining visual lookout for the wing walker's visual signal, and the driver not maintaining clearance from the vehicle during the pushback for taxi.  Factors to the accident were the standing vehicle behind the airplane, the inadequate group/crew coordination for the pushback, and the lack of guidance in the company's manuals to stop the tow when visual lookout is not maintained.

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*Source: [NTSB CAROL](https://data.ntsb.gov/carol-main-public/basic-search?source=ntsb&type=event&ntsb_number=CHI05LA179) · AI Analytics · CC0 1.0*