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CL65 and E145 had less than legal separation in ZAU class east airspace. Both aircraft were on IFR flight plans.
| Attributes | |
| ACN | 461040 |
| Time | |
| Date | 200001 |
| Day | Thu |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | airport : ord.airport |
| State Reference | IL |
| Altitude | msl single value : 15000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : zau.artcc |
| Operator | common carrier : air carrier |
| Make Model Name | Regional Jet CL65, Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Flight Phase | climbout : vacating altitude |
| Route In Use | departure : on vectors |
| Flight Plan | IFR |
| Aircraft 2 | |
| Controlling Facilities | artcc : zau.artcc |
| Operator | common carrier : air carrier |
| Make Model Name | EMB ERJ 145 ER&LR |
| Operating Under FAR Part | Part 121 |
| Flight Phase | cruise : level |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 180 flight time total : 4200 flight time type : 150 |
| ASRS Report | 461040 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : commercial pilot : multi engine pilot : instrument |
| Events | |
| Anomaly | conflict : airborne less severe non adherence : required legal separation non adherence : far non adherence : published procedure |
| Independent Detector | aircraft equipment : tcas other flight crewa other flight crewb |
| Miss Distance | horizontal : 528 vertical : 800 |
| Supplementary | |
| Problem Areas | ATC Human Performance |
| Primary Problem | ATC Human Performance |
| Air Traffic Incident | Operational Error |
Narrative:
We were climbing to 15000 ft as assigned by ATC. The other aircraft was level at 15000 ft. We were never advised of the aircraft by ATC. We received TCASII alert -- no RA. If we had been climbing faster, we would have had a near miss. Evasive action would have been required. Nothing was ever said by ATC about the traffic conflict. There was no error on our assigned altitude (on our part). ATC should have assigned us 14000 ft.
Original NASA ASRS Text
Title: CL65 AND E145 HAD LESS THAN LEGAL SEPARATION IN ZAU CLASS E AIRSPACE. BOTH ACFT WERE ON IFR FLT PLANS.
Narrative: WE WERE CLBING TO 15000 FT AS ASSIGNED BY ATC. THE OTHER ACFT WAS LEVEL AT 15000 FT. WE WERE NEVER ADVISED OF THE ACFT BY ATC. WE RECEIVED TCASII ALERT -- NO RA. IF WE HAD BEEN CLBING FASTER, WE WOULD HAVE HAD A NEAR MISS. EVASIVE ACTION WOULD HAVE BEEN REQUIRED. NOTHING WAS EVER SAID BY ATC ABOUT THE TFC CONFLICT. THERE WAS NO ERROR ON OUR ASSIGNED ALT (ON OUR PART). ATC SHOULD HAVE ASSIGNED US 14000 FT.
Data retrieved from NASA's ASRS site as of July 2007 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.