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ZID controller issues clearance to wrong air carrier which causes a conflict which is complicated by area WX, central flow control WX reroutes and heavy traffic sector volume.
| Attributes | |
| ACN | 514232 |
| Time | |
| Date | 200106 |
| Day | Tue |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | navaid : vhp.vortac |
| State Reference | IN |
| Altitude | msl single value : 35000 |
| Environment | |
| Weather Elements | Thunderstorm |
| Light | Dusk |
| Aircraft 1 | |
| Controlling Facilities | artcc : zid.artcc |
| Operator | common carrier : air carrier |
| Make Model Name | A320 |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | other |
| Flight Phase | cruise : level |
| Route In Use | enroute : on vectors |
| Flight Plan | IFR |
| Aircraft 2 | |
| Controlling Facilities | artcc : zid.artcc |
| Operator | common carrier : air carrier |
| Make Model Name | DC-9 Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Flight Phase | cruise : level |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | government : faa |
| Function | controller : radar |
| Qualification | controller : radar |
| Experience | controller military : 4 controller radar : 10 controller time certified in position1 : 2 |
| ASRS Report | 514232 |
| Person 2 | |
| Affiliation | government : faa |
| Function | controller : radar |
| Qualification | controller : radar |
| Experience | controller limited radar : 1 controller non radar : 2 controller radar : 11 controller time certified in position1 : 10 controller time certified in position2 : 9 |
| ASRS Report | 514433 |
| Events | |
| Anomaly | non adherence : required legal separation non adherence : published procedure other anomaly other |
| Independent Detector | other controllera other controllerb other other : ctlr 3 |
| Resolutory Action | none taken : detected after the fact |
| Consequence | faa : investigated |
| Miss Distance | horizontal : 20400 vertical : 700 |
| Supplementary | |
| Problem Areas | Weather FAA ATC Human Performance |
| Air Traffic Incident | Operational Error |
| Situations | |
| ATC Facility | procedure or policy : zid.artcc |
Narrative:
Aircraft were both being sequenced for arrival to dtw. Lead aircraft was switched to next sector that normally descends to FL330. I had not turned lead aircraft toward next fix by mistake and did turn following aircraft toward fix. Separation was inadvertently lost when following aircraft caught lead. Supplemental information from acn 514433: WX in central ohio. All detroit area arrs were rerouted over ind to avoid the WX. This caused a major spacing problem for the en route sectors over ind. Supplemental information from acn 514834: while providing general oversight in a controller in charge (controller in charge) capacity, and operational error occurred. High and super high sectors were out of control and chaotic due to saturation. Center flow control was responsible for routing a dangerous amount of traffic into already busy sectors.
Original NASA ASRS Text
Title: ZID CTLR ISSUES CLRNC TO WRONG ACR WHICH CAUSES A CONFLICT WHICH IS COMPLICATED BY AREA WX, CENTRAL FLOW CTL WX REROUTES AND HVY TFC SECTOR VOLUME.
Narrative: ACFT WERE BOTH BEING SEQUENCED FOR ARR TO DTW. LEAD ACFT WAS SWITCHED TO NEXT SECTOR THAT NORMALLY DSNDS TO FL330. I HAD NOT TURNED LEAD ACFT TOWARD NEXT FIX BY MISTAKE AND DID TURN FOLLOWING ACFT TOWARD FIX. SEPARATION WAS INADVERTENTLY LOST WHEN FOLLOWING ACFT CAUGHT LEAD. SUPPLEMENTAL INFO FROM ACN 514433: WX IN CENTRAL OHIO. ALL DETROIT AREA ARRS WERE REROUTED OVER IND TO AVOID THE WX. THIS CAUSED A MAJOR SPACING PROB FOR THE ENRTE SECTORS OVER IND. SUPPLEMENTAL INFO FROM ACN 514834: WHILE PROVIDING GENERAL OVERSIGHT IN A CIC (CTLR IN CHARGE) CAPACITY, AND OPERROR OCCURRED. HIGH AND SUPER HIGH SECTORS WERE OUT OF CTL AND CHAOTIC DUE TO SATURATION. CTR FLOW CTL WAS RESPONSIBLE FOR ROUTING A DANGEROUS AMOUNT OF TFC INTO ALREADY BUSY SECTORS.
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.