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ZME controller misread aircraft routing and experienced operational error at FL410.
| Attributes | |
| ACN | 614128 |
| Time | |
| Date | 200403 |
| Day | Wed |
| Local Time Of Day | 0001 To 0600 |
| Place | |
| Locale Reference | atc facility : zme.artcc |
| State Reference | TN |
| Altitude | msl single value : 41000 |
| Environment | |
| Light | Night |
| Aircraft 1 | |
| Controlling Facilities | artcc : zme.artcc |
| Operator | general aviation : corporate |
| Make Model Name | Challenger CL600 |
| Operating Under FAR Part | Part 91 |
| Navigation In Use | other |
| Flight Phase | cruise : level |
| Flight Plan | IFR |
| Aircraft 2 | |
| Controlling Facilities | artcc : zme.artcc |
| Operator | other |
| Make Model Name | B2 Spirit/Bomber |
| Operating Under FAR Part | Part 91 |
| Flight Phase | cruise : level |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | government : faa |
| Function | controller : radar |
| Qualification | controller : radar |
| Experience | controller radar : 9 |
| ASRS Report | 614128 |
| Person 2 | |
| Affiliation | company : corporate |
| Function | flight crew : captain oversight : pic |
| Events | |
| Anomaly | conflict : airborne critical non adherence : required legal separation |
| Independent Detector | atc equipment : conflict alert aircraft equipment : tcas other controllera |
| Resolutory Action | controller : issued new clearance controller : separated traffic flight crew : took evasive action |
| Consequence | faa : investigated |
| Miss Distance | horizontal : 16200 vertical : 200 |
| Supplementary | |
| Problem Areas | ATC Human Performance |
| Primary Problem | ATC Human Performance |
| Air Traffic Incident | Operational Error |
Narrative:
I was working sector 24 at ZME (aircraft X and aircraft Y). I pulled up the flight plan on aircraft X and saw 'cng' lit. Thinking that the aircraft Y was going to go behind the aircraft X, but it was going to be close, I put up a circle around aircraft X. I then noticed the aircraft X turning right into the aircraft Y. I then turned the aircraft Y 30 degrees left and the aircraft X to a 270 degree heading. They missed by 2.68 mi and 200 ft vertical. I looked at the routing wrong. I saw 'cng' lit when it was 'cng stl' lit.
Original NASA ASRS Text
Title: ZME CTLR MISREAD ACFT ROUTING AND EXPERIENCED OPERROR AT FL410.
Narrative: I WAS WORKING SECTOR 24 AT ZME (ACFT X AND ACFT Y). I PULLED UP THE FLT PLAN ON ACFT X AND SAW 'CNG' LIT. THINKING THAT THE ACFT Y WAS GOING TO GO BEHIND THE ACFT X, BUT IT WAS GOING TO BE CLOSE, I PUT UP A CIRCLE AROUND ACFT X. I THEN NOTICED THE ACFT X TURNING RIGHT INTO THE ACFT Y. I THEN TURNED THE ACFT Y 30 DEGS L AND THE ACFT X TO A 270 DEG HDG. THEY MISSED BY 2.68 MI AND 200 FT VERT. I LOOKED AT THE ROUTING WRONG. I SAW 'CNG' LIT WHEN IT WAS 'CNG STL' LIT.
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.