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ZID controller's unfamiliarity with sector delays vectoring to establish sequencing and incurs a loss of separation.
| Attributes | |
| ACN | 523061 |
| Time | |
| Date | 200108 |
| Day | Mon |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| State Reference | KY |
| Altitude | msl single value : 11000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : zid.artcc tower : atl.tower |
| Operator | common carrier : air carrier |
| Make Model Name | EMB ERJ 135 ER&LR |
| 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 | B737-300 |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | other |
| Flight Phase | descent : intermediate altitude |
| Route In Use | arrival : on vectors |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | government : faa |
| Function | controller : radar |
| Qualification | controller : radar |
| Experience | controller limited radar : 7 controller non radar : 8 controller radar : 6 controller time certified in position2 : 4 |
| ASRS Report | 523061 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Events | |
| Anomaly | conflict : airborne less severe non adherence : required legal separation non adherence : published procedure |
| Independent Detector | atc equipment : conflict alert atc equipment other atc equipment : radar other controllera |
| Resolutory Action | none taken : insufficient time |
| Consequence | faa : investigated |
| Miss Distance | horizontal : 28200 vertical : 200 |
| Supplementary | |
| Problem Areas | Environmental Factor Airspace Structure ATC Human Performance |
| Primary Problem | ATC Human Performance |
| Air Traffic Incident | Intra Facility Coordination Failure Operational Error |
Narrative:
During arrival spacing, aircraft #2 was vectored behind aircraft #1 at the same altitude. 3 sectors combined, using 4 frequencys, created moderate traffic with high complexity. Relative unfamiliarity at sector at very large range setting for scope led to last min vectors for spacing. More effort to space early in sector will be made. Also, requesting for sectors to be split apart will be important.
Original NASA ASRS Text
Title: ZID CTLR'S UNFAMILIARITY WITH SECTOR DELAYS VECTORING TO ESTABLISH SEQUENCING AND INCURS A LOSS OF SEPARATION.
Narrative: DURING ARR SPACING, ACFT #2 WAS VECTORED BEHIND ACFT #1 AT THE SAME ALT. 3 SECTORS COMBINED, USING 4 FREQS, CREATED MODERATE TFC WITH HIGH COMPLEXITY. RELATIVE UNFAMILIARITY AT SECTOR AT VERY LARGE RANGE SETTING FOR SCOPE LED TO LAST MIN VECTORS FOR SPACING. MORE EFFORT TO SPACE EARLY IN SECTOR WILL BE MADE. ALSO, REQUESTING FOR SECTORS TO BE SPLIT APART WILL BE IMPORTANT.
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.