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ARTCC radar controller climbed an light transport through the altitude of an large transport and had less than standard separation occur.
| Attributes | |
| ACN | 258234 |
| Time | |
| Date | 199312 |
| Day | Fri |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | atc facility : fkn |
| State Reference | VA |
| Altitude | msl bound lower : 37000 msl bound upper : 38000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : zdc |
| Operator | general aviation : corporate |
| Make Model Name | Light Transport, Low Wing, 2 Turbojet Eng |
| Flight Phase | climbout : intermediate altitude |
| Flight Plan | IFR |
| Aircraft 2 | |
| Operator | common carrier : air carrier |
| Make Model Name | Large Transport, Low Wing, 2 Turbojet Eng |
| Navigation In Use | Other Other |
| Flight Phase | cruise other |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | government : faa |
| Function | controller : flight data |
| Qualification | controller : radar |
| Experience | controller military : 12 controller radar : 37 |
| ASRS Report | 258234 |
| Person 2 | |
| Affiliation | government : faa |
| Function | controller : radar |
| Qualification | controller : radar |
| Events | |
| Anomaly | conflict : airborne less severe non adherence : required legal separation |
| Independent Detector | atc equipment other atc equipment : unspecified |
| Resolutory Action | controller : issued new clearance other |
| Consequence | faa : investigated |
| Supplementary | |
| Primary Problem | ATC Human Performance |
| Air Traffic Incident | Operational Error |
Narrative:
I was working the D50 sector and there were 12-15 aircraft on the frequency. The R-50 controller cleared light transport X to climb to FL390 to avoid a problem with a FL350 sbound just north of orf. It appeared at the time that large transport Y, nebound at FL370 would pass well behind the light transport X. The conflict alert went off when the 2 aircraft were 7 mi apart. The controller cleared light transport X and large transport Y to both turn left. Both aircraft complied. Aircraft came no closer than 3 mi laterally or less than 1000 ft vertically.
Original NASA ASRS Text
Title: ARTCC RADAR CTLR CLBED AN LTT THROUGH THE ALT OF AN LGT AND HAD LTSS OCCUR.
Narrative: I WAS WORKING THE D50 SECTOR AND THERE WERE 12-15 ACFT ON THE FREQ. THE R-50 CTLR CLRED LTT X TO CLB TO FL390 TO AVOID A PROB WITH A FL350 SBOUND JUST N OF ORF. IT APPEARED AT THE TIME THAT LGT Y, NEBOUND AT FL370 WOULD PASS WELL BEHIND THE LTT X. THE CONFLICT ALERT WENT OFF WHEN THE 2 ACFT WERE 7 MI APART. THE CTLR CLRED LTT X AND LGT Y TO BOTH TURN L. BOTH ACFT COMPLIED. ACFT CAME NO CLOSER THAN 3 MI LATERALLY OR LESS THAN 1000 FT VERTICALLY.
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.