Serious incident Embraer EMB-145LR N15574, Monday 16 May 2011

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Date:	Monday 16 May 2011
Time:	08:34 LT
Type:	Embraer EMB-145LR
Owner/operator:	United Express, opb ExpressJet Airlines
Registration:	N15574
MSN:	145639
Fatalities:	Fatalities: 0 / Occupants: 11
Other fatalities:	0
Aircraft damage:	None
Category:	Serious incident
Location:	Chicago-O'Hare International Airport, IL (ORD/KORD) - United States of America
Phase:	Take off
Nature:	Unknown
Departure airport:	Muskegon County, MI
Destination airport:	Chicago-O'Hare International Airport, IL (ORD/KORD)
Investigating agency:	NTSB
Confidence Rating:	Accident investigation report completed and information captured

Narrative:

Probable Cause: The air traffic controller's failure to adhere to runway separation requirements and his issuance of an improper takeoff clearance. Contributing to the incident was the controller's failure to recall that there was an arrival inbound to a crossing runway.

Accident investigation: