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Deviation controller at ord experienced operational error when clearing 2 aircraft for takeoff on intersecting runways 4L and 9L.
| Attributes | |
| ACN | 692454 |
| Time | |
| Date | 200603 |
| Local Time Of Day | 0001 To 0600 |
| Place | |
| Locale Reference | airport : ord.airport |
| State Reference | IL |
| Altitude | agl single value : 0 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tower : zzz.tower |
| Operator | common carrier : air carrier |
| Make Model Name | Airbus Industrie Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Flight Phase | ground : takeoff roll |
| Flight Plan | IFR |
| Aircraft 2 | |
| Controlling Facilities | tower : ord.tower |
| Operator | common carrier : air carrier |
| Make Model Name | Regional Jet CL65 Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Flight Phase | ground : takeoff roll |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | government : faa |
| Function | controller : local |
| Qualification | controller : radar |
| Experience | controller limited radar : 1.5 controller radar : 13.5 |
| ASRS Report | 692454 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Events | |
| Anomaly | conflict : ground critical non adherence : required legal separation |
| Independent Detector | other controllera |
| Resolutory Action | controller : issued new clearance |
| Consequence | faa : investigated |
| Supplementary | |
| Problem Areas | ATC Human Performance |
| Primary Problem | ATC Human Performance |
| Air Traffic Incident | Operational Error |
Narrative:
The problem arose when I cleared air carrier X for takeoff on runway 4L and cleared air carrier Y for takeoff 35 seconds later on runway 9L not realizing air carrier X had not rolled yet. It was discovered when I saw both planes start their roll simultaneously. Air carrier X not rolling in a timely manner contributed to the error both plans were told to stop. The only human consideration was my recognizing that air carrier X was still sitting in position when I cleared air carrier Y for takeoff.
Original NASA ASRS Text
Title: DEV CTLR AT ORD EXPERIENCED OPERROR WHEN CLRING 2 ACFT FOR TKOF ON INTERSECTING RWYS 4L AND 9L.
Narrative: THE PROB AROSE WHEN I CLRED ACR X FOR TKOF ON RWY 4L AND CLRED ACR Y FOR TKOF 35 SECONDS LATER ON RWY 9L NOT REALIZING ACR X HAD NOT ROLLED YET. IT WAS DISCOVERED WHEN I SAW BOTH PLANES START THEIR ROLL SIMULTANEOUSLY. ACR X NOT ROLLING IN A TIMELY MANNER CONTRIBUTED TO THE ERROR BOTH PLANS WERE TOLD TO STOP. THE ONLY HUMAN CONSIDERATION WAS MY RECOGNIZING THAT ACR X WAS STILL SITTING IN POS WHEN I CLRED ACR Y FOR TKOF.
Data retrieved from NASA's ASRS site as of January 2009 and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.