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ZID controller experienced operational error at FL220 when descending aircraft through occupied altitude utilizing radar vectors.
| Attributes | |
| ACN | 648830 |
| Time | |
| Date | 200502 |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | navaid : tvt.vor |
| State Reference | OH |
| Altitude | msl single value : 23000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Dusk |
| Aircraft 1 | |
| Controlling Facilities | artcc : zid.artcc |
| Operator | common carrier : air carrier |
| Make Model Name | B737 Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Flight Phase | descent : intermediate altitude |
| Flight Plan | IFR |
| Aircraft 2 | |
| Controlling Facilities | artcc : zid.artcc |
| Operator | common carrier : air carrier |
| Make Model Name | Regional Jet 200 ER&LR |
| Operating Under FAR Part | Part 121 |
| Flight Phase | cruise : level |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | government : faa |
| Function | controller : radar instruction : trainee |
| Qualification | controller : developmental |
| Experience | controller limited radar : 0.5 |
| ASRS Report | 648830 |
| Person 2 | |
| Affiliation | government : faa |
| Function | controller : radar instruction : instructor |
| 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 flight crew : took evasive action |
| Consequence | faa : investigated |
| Miss Distance | horizontal : 27600 |
| Supplementary | |
| Problem Areas | ATC Human Performance |
| Primary Problem | ATC Human Performance |
| Air Traffic Incident | Operational Error |
Narrative:
Air carrier X was assigned FL210 and descended through an overflt (air carrier Y) at FL220. Lateral separation was not achieved; although vectors and descent were given. The major contributing factors were a heavy workload and a high cak inbound received at FL240 needed to be at 9000 ft in 20 mi. He needed to be woven through numerous traffic and coordination with 4 sectors.
Original NASA ASRS Text
Title: ZID CTLR EXPERIENCED OPERROR AT FL220 WHEN DSNDING ACFT THROUGH OCCUPIED ALT UTILIZING RADAR VECTORS.
Narrative: ACR X WAS ASSIGNED FL210 AND DSNDED THROUGH AN OVERFLT (ACR Y) AT FL220. LATERAL SEPARATION WAS NOT ACHIEVED; ALTHOUGH VECTORS AND DSCNT WERE GIVEN. THE MAJOR CONTRIBUTING FACTORS WERE A HVY WORKLOAD AND A HIGH CAK INBOUND RECEIVED AT FL240 NEEDED TO BE AT 9000 FT IN 20 MI. HE NEEDED TO BE WOVEN THROUGH NUMEROUS TFC AND COORD WITH 4 SECTORS.
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.