# NTSB Incident OPS10IA155
> **EMBRAER EMB-135KL** · 2010-04-22 · Chicago, IL, USA · —
## Event
- **NTSB number:** OPS10IA155
- **Event ID:** 20100510X84105
- **Type:** Incident
- **Date:** 2010-04-22
- **Location:** Chicago, IL, USA
- **Coordinates:** 41.890262, -87.619194
## Injuries
- **Highest injury:** —
- **Fatal:** 0
- **Serious:** 0
- **Minor:** 0
- **Uninjured:** 0
- **Total aboard:** 0
## Aircraft
- **Make:** EMBRAER
- **Model:** EMB-135KL
- **Registration:** N806AE
- **FAR Part:** 121
- **Engines:** 2
- **Damage:** —
## Conditions
- **Light:** NITE
- **Weather:** VMC
## Probable cause

The air traffic controller's issuance of an improper takeoff clearance to the pilot of the Embraer. Contributing to the incident was the instructor’s inadequate monitoring of the trainee local controller.

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*Source: [NTSB CAROL](https://data.ntsb.gov/carol-main-public/basic-search?source=ntsb&type=event&ntsb_number=OPS10IA155) · AI Analytics · CC0 1.0*