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2 ZID controllers are made aware of traffic conflict when computer conflict alert activates. Reporter states both controllers overlooked pending conflict.
| Attributes | |
| ACN | 430068 |
| Time | |
| Date | 199903 |
| Day | Thu |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | navaid : shb.vor |
| State Reference | IN |
| Altitude | msl single value : 30000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : zid.artcc |
| Operator | common carrier : air carrier |
| Make Model Name | B737-200 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | cruise : level |
| Flight Plan | IFR |
| Aircraft 2 | |
| Controlling Facilities | artcc : zid.artcc |
| Operator | common carrier : air carrier |
| Make Model Name | B727-200 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | descent : vacating altitude |
| Route In Use | enroute other |
| Flight Plan | IFR |
| Person 1 | |
| Function | flight crew : captain oversight : pic |
| Qualification | controller : radar pilot : atp pilot : instrument pilot : private |
| Experience | controller radar : 17 controller time certified in position1 : 12 flight time total : 300 |
| ASRS Report | 430068 |
| Person 2 | |
| Affiliation | government : faa |
| Function | controller : radar |
| Qualification | controller : radar |
| Events | |
| Anomaly | conflict : airborne less severe non adherence : published procedure non adherence : required legal separation |
| Independent Detector | atc equipment : conflict alert |
| Resolutory Action | none taken : detected after the fact |
| Consequence | faa : investigated |
| Miss Distance | horizontal : 22800 vertical : 1100 |
| Supplementary | |
| Problem Areas | ATC Human Performance |
| Primary Problem | ATC Human Performance |
| Air Traffic Incident | Operational Error |
Narrative:
The 2 aircraft were in the cvg vicinity. An ord arrival (aircraft Y) was descended to FL280 from FL310 with traffic (aircraft X) at FL290. The sector was busy and getting busier. The radar controller's judgement just overlooked the traffic, reacting to other traffic (aircraft Z) at FL310. Conflict alert alerted both controllers of the scenario.
Original NASA ASRS Text
Title: 2 ZID CTLRS ARE MADE AWARE OF TFC CONFLICT WHEN COMPUTER CONFLICT ALERT ACTIVATES. RPTR STATES BOTH CTLRS OVERLOOKED PENDING CONFLICT.
Narrative: THE 2 ACFT WERE IN THE CVG VICINITY. AN ORD ARR (ACFT Y) WAS DSNDED TO FL280 FROM FL310 WITH TFC (ACFT X) AT FL290. THE SECTOR WAS BUSY AND GETTING BUSIER. THE RADAR CTLR'S JUDGEMENT JUST OVERLOOKED THE TFC, REACTING TO OTHER TFC (ACFT Z) AT FL310. CONFLICT ALERT ALERTED BOTH CTLRS OF THE SCENARIO.
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.