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ZID controller experienced operational error at approximately FL290 when one aircraft reacted to an ATC clearance issued to another aircraft.
| Attributes | |
| ACN | 680453 |
| Time | |
| Date | 200512 |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | atc facility : zid.artcc |
| State Reference | IN |
| Altitude | msl bound lower : 28000 msl bound upper : 29000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Operator | common carrier : air taxi |
| Make Model Name | Citation II S2/Bravo |
| Operating Under FAR Part | Part 135 |
| Navigation In Use | other vortac |
| Flight Phase | descent : vacating altitude |
| Flight Plan | IFR |
| Aircraft 2 | |
| Controlling Facilities | artcc : zid.artcc |
| Operator | other |
| Make Model Name | Learjet 35 |
| Operating Under FAR Part | Part 91 |
| Flight Phase | cruise : level |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | government : faa |
| Function | controller : radar |
| Qualification | controller : radar |
| Experience | controller limited radar : 2 controller radar : 13 controller supervisory : 0.3 |
| ASRS Report | 680453 |
| Person 2 | |
| Affiliation | company : air taxi |
| 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 | controller : issued new clearance controller : issued alert |
| Miss Distance | horizontal : 9000 vertical : 700 |
| Supplementary | |
| Problem Areas | ATC Human Performance |
| Primary Problem | ATC Human Performance |
| Air Traffic Incident | Operational Error |
Narrative:
Aircraft #1 took a descent clearance for another aircraft. Separation was lost with aircraft #2. Conflict alert activated too late to provide an actual alert.
Original NASA ASRS Text
Title: ZID CTLR EXPERIENCED OPERROR AT APPROX FL290 WHEN ONE ACFT REACTED TO AN ATC CLRNC ISSUED TO ANOTHER ACFT.
Narrative: ACFT #1 TOOK A DSCNT CLRNC FOR ANOTHER ACFT. SEPARATION WAS LOST WITH ACFT #2. CONFLICT ALERT ACTIVATED TOO LATE TO PROVIDE AN ACTUAL ALERT.
Data retrieved from NASA's ASRS site as of January 2009 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.