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Operational error less than standard separation between a descending gulfstream and a climbing air carrier.
| Attributes | |
| ACN | 378347 |
| Time | |
| Date | 199708 |
| Day | Thu |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | atc facility : zau |
| State Reference | IL |
| Altitude | msl bound lower : 31000 msl bound upper : 33000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : zau |
| Operator | general aviation : corporate |
| Make Model Name | Gulfstream Jet Undifferentiated or Other Model |
| Operating Under FAR Part | Part 91 |
| Flight Phase | descent other |
| Flight Plan | IFR |
| Aircraft 2 | |
| Operator | common carrier : air carrier |
| Make Model Name | Commercial Fixed Wing |
| Operating Under FAR Part | Part 121 |
| Flight Phase | climbout : intermediate altitude |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | government : faa |
| Function | controller : radar |
| Qualification | controller : radar |
| Experience | controller radar : 4 |
| ASRS Report | 378347 |
| Person 2 | |
| Affiliation | Other |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Events | |
| Anomaly | conflict : airborne less severe non adherence : published procedure non adherence : required legal separation |
| Independent Detector | other controllera |
| Resolutory Action | controller : issued new clearance other |
| Consequence | Other |
| Miss Distance | horizontal : 27600 vertical : 1700 |
| Supplementary | |
| Primary Problem | ATC Human Performance |
| Air Traffic Incident | Operational Error |
Narrative:
Aircraft #2 was climbing to FL330 and aircraft #1 was descending to FL310. Aircraft #1 was told to descend at a good rate and then turned 30 degrees to avoid aircraft #2.
Original NASA ASRS Text
Title: OPERROR LTSS BTWN A DSNDING GULFSTREAM AND A CLBING ACR.
Narrative: ACFT #2 WAS CLBING TO FL330 AND ACFT #1 WAS DSNDING TO FL310. ACFT #1 WAS TOLD TO DSND AT A GOOD RATE AND THEN TURNED 30 DEGS TO AVOID ACFT #2.
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.