# NTSB Incident CHI93IA126
> **ATR ATR 42** · 1993-03-13 · CHICAGO, IL, USA · NONE
## Event
- **NTSB number:** CHI93IA126
- **Event ID:** 20001211X11942
- **Type:** Incident
- **Date:** 1993-03-13
- **Location:** CHICAGO, IL, USA
## Injuries
- **Highest injury:** NONE
- **Fatal:** 0
- **Serious:** 0
- **Minor:** 0
- **Uninjured:** 3
- **Total aboard:** 3
## Aircraft
- **Make:** ATR
- **Model:** ATR 42
- **Registration:** N426MQ
- **FAR Part:** 121
- **Engines:** 2
- **Damage:** —
## Conditions
- **Light:** DAYL
- **Weather:** IMC
## Probable cause

AN IMPROPER CLEARANCE BY THE NORTH LOCAL CONTROLLER, WHICH RESULTED IN A FAILURE TO MAINTAIN PROPER IFR SEPARATION. A FACTOR RELATED TO THE INCIDENT WAS: INADEQUATE COORDINATION AMONG THE TOWER PERSONNEL.

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*Source: [NTSB CAROL](https://data.ntsb.gov/carol-main-public/basic-search?source=ntsb&type=event&ntsb_number=CHI93IA126) · AI Analytics · CC0 1.0*