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ZOB ARTCC controller experienced loss of separation with en route aircraft.
| Attributes | |
| ACN | 583019 |
| Time | |
| Date | 200305 |
| Day | Wed |
| Local Time Of Day | 1801 To 2400 |
| Place | |
| Locale Reference | navaid : fdy.vortac |
| State Reference | OH |
| Altitude | msl single value : 2000 |
| Environment | |
| Flight Conditions | Mixed |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : zob.artcc |
| Operator | general aviation : corporate |
| Make Model Name | Gates Learjet Corp Undifferentiated or Other Model |
| Operating Under FAR Part | Part 91 |
| Flight Phase | descent : intermediate altitude descent : vacating altitude |
| Flight Plan | IFR |
| Aircraft 2 | |
| Controlling Facilities | artcc : zob.artcc |
| Operator | common carrier : air carrier |
| Make Model Name | B737-800 |
| Operating Under FAR Part | Part 121 |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | government : faa |
| Function | controller : radar |
| Qualification | controller : radar |
| Experience | controller radar : 15 |
| ASRS Report | 583019 |
| Person 2 | |
| Affiliation | company : corporate |
| Function | flight crew : captain oversight : pic |
| Events | |
| Anomaly | conflict : airborne less severe non adherence : required legal separation |
| Independent Detector | atc equipment : conflict alert other controllera |
| Resolutory Action | none taken : detected after the fact |
| Consequence | faa : investigated |
| Miss Distance | horizontal : 21000 vertical : 0 |
| Supplementary | |
| Problem Areas | ATC Human Performance |
| Primary Problem | ATC Human Performance |
| Air Traffic Incident | Operational Error |
Narrative:
Learjet was issued descent to FL190 instead of FL210. FL210 was entered into the data block. Air carrier was an emergency aircraft direct ord cutting through the middle of the sector at FL200. Learjet was supposed to stop at FL210 like I thought was issued. When it showed FL207 I asked assigned altitude. Reply was FL190. Lower was available and issued to clear up conflict.
Original NASA ASRS Text
Title: ZOB ARTCC CTLR EXPERIENCED LOSS OF SEPARATION WITH ENRTE ACFT.
Narrative: LEARJET WAS ISSUED DSCNT TO FL190 INSTEAD OF FL210. FL210 WAS ENTERED INTO THE DATA BLOCK. ACR WAS AN EMER ACFT DIRECT ORD CUTTING THROUGH THE MIDDLE OF THE SECTOR AT FL200. LEARJET WAS SUPPOSED TO STOP AT FL210 LIKE I THOUGHT WAS ISSUED. WHEN IT SHOWED FL207 I ASKED ASSIGNED ALT. REPLY WAS FL190. LOWER WAS AVAILABLE AND ISSUED TO CLR UP CONFLICT.
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.