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37000 Feet | Browse and search NASA's Aviation Safety Reporting System |
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| Attributes | |
| ACN | 601053 |
| Time | |
| Date | 200311 |
| Day | Sun |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | navaid : vhp.vortac |
| State Reference | IN |
| Altitude | msl single value : 30000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Dusk |
| Aircraft 1 | |
| Controlling Facilities | artcc : zid.artcc |
| Operator | common carrier : air carrier |
| Make Model Name | Regional Jet CL65, Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Flight Phase | climbout : intermediate altitude |
| Route In Use | departure : on vectors |
| Flight Plan | IFR |
| Aircraft 2 | |
| Controlling Facilities | artcc : zid.artcc |
| Operator | common carrier : air carrier |
| Make Model Name | B757 Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| 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 time certified in position1 : 11 controller time certified in position2 : 11 flight time total : 560 |
| ASRS Report | 601053 |
| Person 2 | |
| Affiliation | government : faa |
| Function | controller : radar |
| Qualification | controller : developmental |
| Experience | controller military : 6 controller radar : 9 controller time certified in position1 : 4 |
| ASRS Report | 602272 |
| Events | |
| Anomaly | conflict : airborne less severe non adherence : required legal separation |
| Independent Detector | atc equipment : conflict alert other controllera other controllerb |
| Resolutory Action | controller : issued new clearance |
| Consequence | faa : investigated |
| Miss Distance | horizontal : 18000 vertical : 1600 |
| Supplementary | |
| Problem Areas | Environmental Factor Weather ATC Human Performance |
| Primary Problem | ATC Human Performance |
| Air Traffic Incident | Operational Error |
Narrative:
Aircraft #1 was sbound climbing to FL330. Aircraft #2 was northbound level at FL310. I initially turned aircraft #1 southeast on course, but didn't realize aircraft #2 was there (heavy traffic with data block overlap played a part in this). I realized aircraft #2 was a factor before conflict alert activated and attempted to turn both and descend aircraft #2. I had to wait a short time to descend aircraft #2 because of traffic at FL290. Also, I didn't realize that the upper winds were as strong as they were, which resulted in aircraft #1 picking up speed and the turns not being as effective as I had hoped. Aircraft #2 arrived on my frequency prior to my accepting the radar handoff which, I believe, compromised my normal scan for that aircraft. I also believe that had I fully appreciated the direction and speed of the winds, I would have used more degrees of turn to save lateral separation.
Original NASA ASRS Text
Title: ZID CTLR EXPERIENCED LOSS OF SEPARATION WITH AN ENRTE AND CLBING ACFT AT FL300.
Narrative: ACFT #1 WAS SBOUND CLBING TO FL330. ACFT #2 WAS NBOUND LEVEL AT FL310. I INITIALLY TURNED ACFT #1 SE ON COURSE, BUT DIDN'T REALIZE ACFT #2 WAS THERE (HVY TFC WITH DATA BLOCK OVERLAP PLAYED A PART IN THIS). I REALIZED ACFT #2 WAS A FACTOR BEFORE CONFLICT ALERT ACTIVATED AND ATTEMPTED TO TURN BOTH AND DSND ACFT #2. I HAD TO WAIT A SHORT TIME TO DSND ACFT #2 BECAUSE OF TFC AT FL290. ALSO, I DIDN'T REALIZE THAT THE UPPER WINDS WERE AS STRONG AS THEY WERE, WHICH RESULTED IN ACFT #1 PICKING UP SPD AND THE TURNS NOT BEING AS EFFECTIVE AS I HAD HOPED. ACFT #2 ARRIVED ON MY FREQ PRIOR TO MY ACCEPTING THE RADAR HDOF WHICH, I BELIEVE, COMPROMISED MY NORMAL SCAN FOR THAT ACFT. I ALSO BELIEVE THAT HAD I FULLY APPRECIATED THE DIRECTION AND SPD OF THE WINDS, I WOULD HAVE USED MORE DEGREES OF TURN TO SAVE LATERAL SEPARATION.
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.