Individually Owned: 150,657
Corporate Owned: 137,281
Chicago O’Hare International Airport
Aircraft Accident/Incident Report
Chicago, Illinois
Monday, May 16, 2011 9:34 CDT
NTSB Narrative Summary Released at Completion of Accident
A near-midair collision occurred between a Bombardier CRJ2 landing on runway 9R and an Embraer ERJ-145 regional jet departing from runway 32L. The CRJ2 passed 480 feet behind and 275 feet above the ERJ-145. According to the tower air traffic controller responsible for operations on runway 32L, he scanned the final approach course for runway 9R to look for conflicting traffic and saw the approaching CRJ2. However, he then forgot about the arrival and cleared the ERJ-145 for takeoff. The controller was unable to provide any explanation for the lapse. The airport was not equipped with automated assistance for detecting conflicts between departures and arrivals on crossing runways such as these.
NTSB Probable Cause Narrative
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.
Event Information
| Type of Event | Incident |
| Event Date | 5/16/2011 |
| Event Day of the Week | Monday |
| Time of Event | 934 |
| Event Time Zone | Central Daylight Time |
| Event City | CHICAGO |
| Event State | ILLINOIS |
| Event Country | -- |
| Zipcode of the event site | -- |
| Event Date Year | 2011 |
| Event Date Month | 5 |
| MidAir Collision Indicator | No |
| On Ground Collision occurred ? | No |
| Event Location Latitude | -- |
| Event Location Longitude | -- |
| Event Location Airport | Chicago O’Hare International |
| Event Location Nearest Airport ID | KORD |
| Indicates whether the acc/inc occurred off or on an airport | On Airport |
| Distance from airport in statute miles | -- |
| Degrees magnetic from airport | -- |
| Airport Elevation | 672 |
| Weather Briefing Completeness | -- |
| Investigator's weather source | Weather Observation Facility |
| Time of the weather observation | 851 Central Daylight Time |
| Direction of event from weather observation facility (degrees) | -- |
| Weather Observation Facility ID | KORD |
| Elevation of weather observation facility | -- |
| Distance of event from weather observation facility (units?) | -- |
| Time Zone of the weather observation | CDT |
| Lighting Conditions | Day |
| Lowest Ceiling Height | -- |
| Lowest Non-Ceiling Height | 25000 |
| Sky/Lowest/Cloud Conditions | Few |
| Sky Condition for Lowest Ceiling | None |
| Visibility Runway Visual Range (Feet) | -- |
| Visibility Runway Visual Value (Statute Miles) | -- |
| Visibility (Statute Miles) | 10 |
| Air Temperature at event time (in degrees celsius) | 9 |
| Dew Point at event time (in degress fahrenheit) | 1 |
| Wind Direction (degrees magnetic) | 30 |
| Variable Wind Indicator | Wind direction could be determined |
| Wind Speed (knots) | 12 |
| Wind Velocity Indicator | -- |
| Wind Gust Indicator | Gusting |
| Wind Gust (knots) | 21 |
| Altimeter Setting at event time (in. Hg) | 30.02 |
| Density Altitude (feet) | -- |
| Intensity of Precipitation | -- |
| METAR weather report | KORD 161351Z 03012G21KT 10SM FEW250 09/01 A3002 RM |
| Event Highest Injury | None |
| On Ground, Fatal Injuries | -- |
| On Ground, Minor Injuries | -- |
| On Ground, Serious Injuries | -- |
| Injury Total Fatal | -- |
| Injury Total Minor | -- |
| Injury Total None | 63 |
| Injury Total Serious | -- |
| Injury Total All | -- |
| Investigating Agency | NTSB |
| NTSB Docket Number (internal use) | 30512 |
| NTSB Notification Source | FAA |
| NTSB Notification Date | -- |
| NTSB Notification Time | -- |
| Fiche Number and/or location -used to find docket information | -- |
| Date of most recent change to record | Sep 17 2012 1:31PM |
| User who most recently changed record | duns |
| Basic weather conditions | Visual Meteorological Cond |
| FAA District Office | -- |
Aircraft Involved |
||
|---|---|---|
Aircraft #1 |
Aircraft #2 |
|
| Aircraft Registration Number | -- | -- |
| NTSB Number | OPS11IA552A | OPS11IA552B |
| Missing Aircraft Indicator | -- | -- |
| Federal Aviation Reg. Part | -- | -- |
| Type of Flight Plan filed | IFR | IFR |
| Flight plan Was Activated? | Yes | Yes |
| Damage | None | None |
| Aircraft Fire | None | None |
| Aircraft Explosion | None | None |
| Aircraft Manufacturer's Full Name | EMBRAER | BOMBARDIER INC |
| Aircraft Model | EMB-145LR | CL-600-2B19 |
| Aircraft Series Identifier | -- | -- |
| Aircraft Serial Number | 145639 | 7437 |
| Certified Max Gross Weight | -- | -- |
| Aircraft Category | Airplane | Airplane |
| Aircraft Registration Class | -- | -- |
| Aircraft is a homebuilt? | No | No |
| Flight Crew Seats | -- | -- |
| Cabin Crew Seats | -- | -- |
| Passenger Seats | -- | -- |
| Total number of seats on the aircraft | 55 | 55 |
| Number of Engines | 2 | 2 |
| Fixed gear or retractable gear | Retractable | Fixed |
| Aircraft, Type of Last Inspection | -- | -- |
| Date of Last Inspection | -- | -- |
| Airframe hours since last inspection | -- | -- |
| Airframe Hours | -- | -- |
| ELT Installed | Yes | Yes |
| ELT Activated | No | No |
| ELT Aided Location of Event Site | No | No |
| ELT Type | Unknown | Unknown |
| Aircraft Owner Name | -- | -- |
| Aircraft Owner Street Address | 299 S MAIN ST 12TH FL | 299 S MAIN ST 12TH FL |
| Aircraft Owner City | SALT LAKE CITY | SALT LAKE CITY |
| Aircraft Owner State | UT | UT |
| Aircraft Owner Country | USA | USA |
| Aircraft Owner Zipcode | 84111 | 84111 |
| Operator is an individual? | No | No |
| Operator Name | -- | -- |
| Operator Same as Owner? | No | No |
| Operator Is Doing Business As | -- | -- |
| Operator Address Same as Owner? | No | No |
| Operator Street Address | -- | -- |
| Operator City | -- | -- |
| Operator State | -- | -- |
| Operator Country | USA | USA |
| Operator Zip code | -- | -- |
| Operator Code | C2XA | C2XA |
| Owner has at least one certificate | Yes - certificate holder | Yes - certificate holder |
| Other Operator of large aircraft? | No | No |
| Certified for Part 133 or 137 Operation | -- | -- |
| Operator Certificate Number | C2XA965W | C2XA965W |
| Indicates whether an air carrier operation was scheduled or not | Scheduled | Scheduled |
| Indicates Domestic or International Flight | Domestic | Domestic |
| Operator carrying Pax/Cargo/Mail | Passenger Only | Passenger Only |
| Type of Flying (Per_Bus / Primary) | -- | -- |
| Second Pilot on Board | Yes | Yes |
| Departure Point Same as Event | Yes | No |
| Departure Airport Code | KORD | KMKG |
| Departure City | CHICAGO | Muskegon County |
| Departure State | IL | MI |
| Departure Country | USA | USA |
| Departure Time | -- | -- |
| Departure Time Zone | CDT | -- |
| Destination Same as Local Flt | -- | crash at destination city |
| Destination Airport Code | KBUF | KORD |
| Destination City | Buffalo | CHICAGO |
| Destination State | NY | IL |
| Destination Country | USA | USA |
| Specific Phase of Flight | -- | -- |
| Report sent to ICAO? | -- | -- |
| Evacuation occurred | -- | -- |
| Date of most recent change to record | Jun 20 2012 9:28AM | Jun 20 2012 9:38AM |
| User who most recently changed record | kosb | kosb |
| Since inspection or accident | -- | -- |
| Event Location Runway Number and Location | 32L | 09R |
| Runway Length | 9685 | 7967 |
| Runway Width | 200 | 150 |
| Sight Seeing flight | No | No |
| Air Medical Flight | No | No |
| Medical Flight | -- | -- |