Narrative:

Ord approach put me in the hold without warning and with aircraft inside the approach fix. The first aircraft was out of 11700 ft for 9000 ft, the second aircraft and the third aircraft were at 9000 ft, 7 mi in trail. Aircraft #4 was at 14000 ft and #5 was out of 17000 ft for 14000 ft. All were in trail inbound to ord. I then began vectoring and changing altitudes to establish a holding pattern with the first 2 aircraft beyond the holding fix and the third aircraft at the holding fix. While trying to establish order with these aircraft and managing the rest of my sector (other inbounds, a departure, and overflts), I turned the MD80 right to a 270 degree heading because it was beyond the holding fix and now over approach airspace. The MD80 was at 14000 ft. Entering my sector from the south at 14000 ft on approximately a 340 degree heading was the B190. Upon initial contact, I turned the B190 left to a 270 degree heading and descended to 13000 ft. After observing a slow descent, I asked the B190 to expedite.

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Original NASA ASRS Text

Title: WHILE VECTORING AN MD80 FOR HOLDING, A ZAU ARTCC CTLR DID NOT IMMEDIATELY NOTICE A B190 ENTERING HIS AIRSPACE AT THE SAME ALT.

Narrative: ORD APCH PUT ME IN THE HOLD WITHOUT WARNING AND WITH ACFT INSIDE THE APCH FIX. THE FIRST ACFT WAS OUT OF 11700 FT FOR 9000 FT, THE SECOND ACFT AND THE THIRD ACFT WERE AT 9000 FT, 7 MI IN TRAIL. ACFT #4 WAS AT 14000 FT AND #5 WAS OUT OF 17000 FT FOR 14000 FT. ALL WERE IN TRAIL INBOUND TO ORD. I THEN BEGAN VECTORING AND CHANGING ALTS TO ESTABLISH A HOLDING PATTERN WITH THE FIRST 2 ACFT BEYOND THE HOLDING FIX AND THE THIRD ACFT AT THE HOLDING FIX. WHILE TRYING TO ESTABLISH ORDER WITH THESE ACFT AND MANAGING THE REST OF MY SECTOR (OTHER INBOUNDS, A DEP, AND OVERFLTS), I TURNED THE MD80 R TO A 270 DEG HDG BECAUSE IT WAS BEYOND THE HOLDING FIX AND NOW OVER APCH AIRSPACE. THE MD80 WAS AT 14000 FT. ENTERING MY SECTOR FROM THE S AT 14000 FT ON APPROX A 340 DEG HDG WAS THE B190. UPON INITIAL CONTACT, I TURNED THE B190 L TO A 270 DEG HDG AND DSNDED TO 13000 FT. AFTER OBSERVING A SLOW DSCNT, I ASKED THE B190 TO EXPEDITE.

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.