# NTSB Incident CHI91IA144
> **BOEING 727-223** · 1991-04-25 · CHICAGO, IL, USA · NONE
## Event
- **NTSB number:** CHI91IA144
- **Event ID:** 20001212X16752
- **Type:** Incident
- **Date:** 1991-04-25
- **Location:** CHICAGO, IL, USA
## Injuries
- **Highest injury:** NONE
- **Fatal:** 0
- **Serious:** 0
- **Minor:** 0
- **Uninjured:** 119
- **Total aboard:** 119
## Aircraft
- **Make:** BOEING
- **Model:** 727-223
- **Registration:** N6815
- **FAR Part:** 121
- **Engines:** 3
- **Damage:** MINR
## Conditions
- **Light:** DAYL
- **Weather:** VMC
## Probable cause

THE FAILURE OF THE GROUND CREW TO PROPERLY ALIGN THE AIRPLANE IN THE GATE ALLEY DURING THE PUSH BACK FROM THE GATE.

---
*Source: [NTSB CAROL](https://data.ntsb.gov/carol-main-public/basic-search?source=ntsb&type=event&ntsb_number=CHI91IA144) · AI Analytics · CC0 1.0*