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ZID controller assumes vectors were sufficient for lateral separation between an en route B737 and DC9.
| Attributes | |
| ACN | 541059 |
| Time | |
| Date | 200203 |
| Day | Mon |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | navaid : flm.vor |
| State Reference | KY |
| Altitude | msl single value : 28000 |
| Environment | |
| Flight Conditions | Mixed |
| Weather Elements | Turbulence |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : zid.artcc |
| Operator | common carrier : air carrier |
| Make Model Name | DC-9 50 |
| 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 | B737-300 |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | other |
| Flight Phase | cruise : level |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | government : faa |
| Function | controller : handoff position controller : radar |
| Qualification | controller : radar |
| Experience | controller radar : 14 controller time certified in position1 : 1 |
| ASRS Report | 541059 |
| Person 2 | |
| Affiliation | government : faa |
| Function | controller : supervisor controller : radar |
| Qualification | controller : radar |
| Experience | controller radar : 13 flight time total : 350 |
| ASRS Report | 541219 |
| 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 : 3.8 vertical : 0 |
| Supplementary | |
| Problem Areas | ATC Human Performance |
| Primary Problem | ATC Human Performance |
| Air Traffic Incident | Operational Error |
Narrative:
I felt the turns issued to aircraft #1 were sufficient and felt that the target jumps were an erroneous representation as to the aircraft's actual track and position. Supplemental information from acn 541219: I had just taken the area. Controller had a halo on one of the conflicting aircraft. I asked if he had considered descending the northbound aircraft and he said, due to target jump, the turns issued had not taken effect yet. Additional turns too late to separate.
Original NASA ASRS Text
Title: ZID CTLR ASSUMES VECTORS WERE SUFFICIENT FOR LATERAL SEPARATION BTWN AN ENRTE B737 AND DC9.
Narrative: I FELT THE TURNS ISSUED TO ACFT #1 WERE SUFFICIENT AND FELT THAT THE TARGET JUMPS WERE AN ERRONEOUS REPRESENTATION AS TO THE ACFT'S ACTUAL TRACK AND POS. SUPPLEMENTAL INFO FROM ACN 541219: I HAD JUST TAKEN THE AREA. CTLR HAD A HALO ON ONE OF THE CONFLICTING ACFT. I ASKED IF HE HAD CONSIDERED DSNDING THE NBOUND ACFT AND HE SAID, DUE TO TARGET JUMP, THE TURNS ISSUED HAD NOT TAKEN EFFECT YET. ADDITIONAL TURNS TOO LATE TO SEPARATE.
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.