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ZDC misjudges lateral separation between a C550 and an A319 and subsequent vector are unable to maintain legal separation.
| Attributes | |
| ACN | 521420 |
| Time | |
| Date | 200108 |
| Day | Mon |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | airport : orf.airport |
| State Reference | VA |
| Altitude | msl single value : 33000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : zdc.artcc |
| Operator | general aviation : personal |
| Make Model Name | Citation II S2/Bravo |
| Operating Under FAR Part | Part 91 |
| Route In Use | enroute : on vectors |
| Flight Plan | IFR |
| Aircraft 2 | |
| Controlling Facilities | artcc : zdc.artcc |
| Operator | common carrier : air carrier |
| Make Model Name | A319 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | cruise : level |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | government : faa |
| Function | controller : radar |
| Experience | controller radar : 18 flight time total : 20 |
| ASRS Report | 521420 |
| Person 2 | |
| Affiliation | other |
| Function | flight crew : captain oversight : pic |
| Events | |
| Anomaly | conflict : airborne less severe non adherence : published procedure non adherence : required legal separation |
| Independent Detector | atc equipment : conflict alert other controllera |
| Resolutory Action | controller : issued new clearance |
| Consequence | faa : investigated |
| Miss Distance | horizontal : 26100 vertical : 600 |
| Supplementary | |
| Problem Areas | ATC Human Performance |
| Primary Problem | ATC Human Performance |
| Air Traffic Incident | Operational Error |
Narrative:
Aircraft #1 was vectored for climb. When I determined separation was achieved, I returned him to his course. Subsequently, I determined lateral separation was insufficient. I turned both aircraft. Conflict alert activated after the aircraft passed.
Original NASA ASRS Text
Title: ZDC MISJUDGES LATERAL SEPARATION BTWN A C550 AND AN A319 AND SUBSEQUENT VECTOR ARE UNABLE TO MAINTAIN LEGAL SEPARATION.
Narrative: ACFT #1 WAS VECTORED FOR CLB. WHEN I DETERMINED SEPARATION WAS ACHIEVED, I RETURNED HIM TO HIS COURSE. SUBSEQUENTLY, I DETERMINED LATERAL SEPARATION WAS INSUFFICIENT. I TURNED BOTH ACFT. CONFLICT ALERT ACTIVATED AFTER THE ACFT PASSED.
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.