Narrative:

Aircraft Y was a departure off burlington; ia. The r-side departed him; then started a track at brl with the wrong cid by accident. The cid belonged to aircraft X; an overflight in the sector. When aircraft Y called off brl; we saw that aircraft X was there instead. The r-side then dropped the track of aircraft X; and replaced it with aircraft Y. We didn't put it together that he had dropped the track of the overflight. A few minutes later; the brl sector r-side brought the ldb of aircraft X to our attention at FL190; in the dbq sector. Aircraft X had entered dbq's airspace without a data block or hand off. We figured out what had happened; restarted the track of aircraft X; and coordinated with dbq. No loss of separation occurred. Recommendation; as the d-side; I should have been more aware of the traffic in the sector. I knew something was fishy when aircraft X was at brl. I did look up his flight plan. I thought that he was still in ZMP airspace; and that he would re-track when he entered ZAU. I should have researched it further.

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Original NASA ASRS Text

Title: ZAU Controllers described an airspace incursion event when incorrect data block information; caused by the wrong CID usage; coupled with a faulty track drop procedure; resulted the unauthorized airspace entry.

Narrative: Aircraft Y was a departure off Burlington; IA. The R-Side departed him; then started a track at BRL with the wrong CID by accident. The CID belonged to Aircraft X; an overflight in the sector. When Aircraft Y called off BRL; we saw that Aircraft X was there instead. The R-Side then dropped the track of Aircraft X; and replaced it with Aircraft Y. We didn't put it together that he had dropped the track of the overflight. A few minutes later; the BRL Sector R-Side brought the LDB of Aircraft X to our attention at FL190; in the DBQ Sector. Aircraft X had entered DBQ's airspace without a data block or hand off. We figured out what had happened; restarted the track of Aircraft X; and coordinated with DBQ. No loss of separation occurred. Recommendation; as the D-Side; I should have been more aware of the traffic in the sector. I knew something was fishy when Aircraft X was at BRL. I did look up his flight plan. I thought that he was still in ZMP airspace; and that he would re-track when he entered ZAU. I should have researched it further.

Data retrieved from NASA's ASRS site as of April 2012 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.