Individually Owned: 151,845
Corporate Owned: 143,699
Chicago O'hare International Airport
Aircraft Accident/Incident Report
Chicago, Illinois
Monday, August 8, 2011 11:00 CDT
NTSB Narrative Summary Released at Completion of Accident
A near-midair collision occurred when an Embraer ERJ-145 regional jet departing from runway 32L passed within close proximity to an Embraer ERJ-135 regional jet on approach to runway 9R. The local controller had cleared the ERJ-145 for takeoff without ensuring that adequate spacing existed between the ERJ-145 and the approaching ERJ-135. The ERJ-135 was instructed to go around, but the two airplanes passed within 125 feet vertically and 350 feet horizontally of each other above runway 32L.
When interviewed, the local controller stated that he had overlooked the arriving airplane during his scan, possibly because he was distracted by coordination requirements affecting two other airplanes.
NTSB Probable Cause Narrative
The improper air traffic control takeoff clearance issued by the local controller because of his lack of monitoring and lack of awareness of the conflicting arrival airplane.
Event Information
| Type of Event | Incident |
| Event Date | 8/8/2011 |
| Event Day of the Week | Monday |
| Time of Event | 1100 |
| 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 | 8 |
| 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 | ORD |
| 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 | Pilot |
| Time of the weather observation | 1051 Central Daylight Time |
| Direction of event from weather observation facility (degrees) | -- |
| Weather Observation Facility ID | ORD |
| 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 | 18000 |
| Lowest Non-Ceiling Height | 3200 |
| Sky/Lowest/Cloud Conditions | Scattered |
| Sky Condition for Lowest Ceiling | Broken |
| Visibility Runway Visual Range (Feet) | -- |
| Visibility Runway Visual Value (Statute Miles) | -- |
| Visibility (Statute Miles) | 10 |
| Air Temperature at event time (in degrees celsius) | 25 |
| Dew Point at event time (in degress fahrenheit) | 19 |
| Wind Direction (degrees magnetic) | 90 |
| Variable Wind Indicator | Wind direction could be determined |
| Wind Speed (knots) | 5 |
| Wind Velocity Indicator | -- |
| Wind Gust Indicator | Not Gusting |
| Wind Gust (knots) | -- |
| Altimeter Setting at event time (in. Hg) | 29.77 |
| Density Altitude (feet) | -- |
| Intensity of Precipitation | -- |
| METAR weather report | 1051 SCT032 BKN180 OVC250 10.00 25.6 19.4, 09005, |
| Event Highest Injury | None |
| On Ground, Fatal Injuries | 0 |
| On Ground, Minor Injuries | 0 |
| On Ground, Serious Injuries | 0 |
| Injury Total Fatal | -- |
| Injury Total Minor | -- |
| Injury Total None | 84 |
| Injury Total Serious | -- |
| Injury Total All | -- |
| Investigating Agency | NTSB |
| NTSB Docket Number (internal use) | 30503 |
| 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 14 2012 11:01AM |
| 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 | OPS11IA819A | OPS11IA819B |
| 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 | EMBRAER |
| Aircraft Model | EMB-135KL | EMB-145LR |
| Aircraft Series Identifier | -- | -- |
| Aircraft Serial Number | 145579 | 14500842 |
| 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 | 37 | 55 |
| Number of Engines | 2 | 2 |
| Fixed gear or retractable gear | Fixed | 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 | 8909 PURDUE RD STE 300 | 11495 NAVAID RD |
| Aircraft Owner City | INDIANAPOLIS | BRIDGETON |
| Aircraft Owner State | IN | MO |
| Aircraft Owner Country | USA | USA |
| Aircraft Owner Zipcode | 46268-3152 | 63044-2335 |
| Operator is an individual? | No | No |
| Operator Name | -- | -- |
| Operator Same as Owner? | Yes | Yes |
| Operator Is Doing Business As | -- | -- |
| Operator Address Same as Owner? | Yes | Yes |
| Operator Street Address | -- | 11495 NAVAID RD |
| Operator City | -- | BRIDGETON |
| Operator State | -- | MO |
| Operator Country | USA | USA |
| Operator Zip code | -- | 63044-2335 |
| Operator Code | CHQA | RAIA |
| 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 | CHQA058A | RAIA053A |
| 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 | -- | -- |
| Departure Point Same as Event | No | Yes |
| Departure Airport Code | LSE | ORD |
| Departure City | La Crosse | Chicago |
| Departure State | WI | IL |
| Departure Country | USA | USA |
| Departure Time | -- | -- |
| Departure Time Zone | -- | CDT |
| Destination Same as Local Flt | crash at destination city | -- |
| Destination Airport Code | ORD | MLI |
| Destination City | Chicago | Moline |
| Destination State | IL | IL |
| Destination Country | USA | USA |
| Specific Phase of Flight | -- | -- |
| Report sent to ICAO? | -- | -- |
| Evacuation occurred | -- | -- |
| Date of most recent change to record | Jun 26 2012 2:19PM | Jun 26 2012 2:19PM |
| User who most recently changed record | duns | duns |
| Since inspection or accident | -- | -- |
| Event Location Runway Number and Location | 32L | 32L |
| Runway Length | 9685 | 9685 |
| Runway Width | 200 | 200 |
| Sight Seeing flight | No | No |
| Air Medical Flight | No | No |
| Medical Flight | -- | -- |