# NTSB Incident OPS09IA006
> **MCDONNELL DOUGLAS MD80** · 2009-06-01 · Chicago, IL, USA · NONE
## Event
- **NTSB number:** OPS09IA006
- **Event ID:** 20090604X25647
- **Type:** Incident
- **Date:** 2009-06-01
- **Location:** Chicago, IL, USA
- **Coordinates:** 41.98389, -87.663612
## Injuries
- **Highest injury:** NONE
- **Fatal:** 0
- **Serious:** 0
- **Minor:** 0
- **Uninjured:** 324
- **Total aboard:** 324
## Aircraft
- **Make:** MCDONNELL DOUGLAS
- **Model:** MD80
- **Registration:** —
- **FAR Part:** 121
- **Engines:** 2
- **Damage:** —
## Conditions
- **Light:** DAYL
- **Weather:** VMC
## Probable cause

The Chicago TRACON West Arrival controller's omission of a required clearance, resulting in AAL 879 overshooting the final for runway 28 and losing separation with AAL 93.

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*Source: [NTSB CAROL](https://data.ntsb.gov/carol-main-public/basic-search?source=ntsb&type=event&ntsb_number=OPS09IA006) · AI Analytics · CC0 1.0*