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ZDC ARTCC instructor and developmental working 2 air carrier aircraft in a crossing situation lose separation.
| Attributes | |
| ACN | 485830 |
| Time | |
| Date | 200009 |
| Day | Tue |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| State Reference | WV |
| Altitude | msl single value : 32100 |
| Environment | |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : zdc.artcc |
| Operator | common carrier : air carrier |
| Make Model Name | B757-200 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | descent : vacating altitude |
| Route In Use | arrival : on vectors |
| Flight Plan | IFR |
| Aircraft 2 | |
| Controlling Facilities | artcc : zdc.artcc |
| Operator | common carrier : air carrier |
| Make Model Name | A320 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | cruise : enroute altitude change |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | government : faa |
| Function | controller : radar instruction : instructor |
| Qualification | controller : radar pilot : private pilot : instrument |
| Experience | controller radar : 23 controller time certified in position1 : 20 flight time total : 3000 |
| ASRS Report | 485830 |
| Person 2 | |
| Affiliation | government : faa |
| Function | controller : radar instruction : trainee |
| Qualification | controller : developmental |
| Experience | controller radar : 15 |
| ASRS Report | 486221 |
| Events | |
| Anomaly | conflict : airborne less severe non adherence : published procedure non adherence : required legal separation other anomaly other |
| Independent Detector | atc equipment : conflict alert other controllera other controllerb |
| Resolutory Action | none taken : insufficient time |
| Miss Distance | horizontal : 27600 vertical : 1500 |
| Supplementary | |
| Problem Areas | ATC Facility ATC Human Performance |
| Primary Problem | ATC Human Performance |
| Air Traffic Incident | Operational Error |
Narrative:
Air carrier X being vectored for sequencing behind a BE40 into iad. Air carrier X turned to a 150 degree heading. Air carrier Y on J53 northbound at FL330. Air carrier X given a descent from FL370 to FL290. Air carrier Y requested FL370 and issued FL370. Air carrier Y requested direct ewc and denied. Since training in progress, I told the developmental that ewc would turn air carrier Y behind air carrier X and it would help maintain the crossing distance. Conflict alert activated, targets jumping around, didn't take corrective action because of jumping data blocks.
Original NASA ASRS Text
Title: ZDC ARTCC INSTRUCTOR AND DEVELOPMENTAL WORKING 2 ACR ACFT IN A XING SIT LOSE SEPARATION.
Narrative: ACR X BEING VECTORED FOR SEQUENCING BEHIND A BE40 INTO IAD. ACR X TURNED TO A 150 DEG HDG. ACR Y ON J53 NBOUND AT FL330. ACR X GIVEN A DSCNT FROM FL370 TO FL290. ACR Y REQUESTED FL370 AND ISSUED FL370. ACR Y REQUESTED DIRECT EWC AND DENIED. SINCE TRAINING IN PROGRESS, I TOLD THE DEVELOPMENTAL THAT EWC WOULD TURN ACR Y BEHIND ACR X AND IT WOULD HELP MAINTAIN THE XING DISTANCE. CONFLICT ALERT ACTIVATED, TARGETS JUMPING AROUND, DIDN'T TAKE CORRECTIVE ACTION BECAUSE OF JUMPING DATA BLOCKS.
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.