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ZDC assoc controller witnessed operational error at 24500 ft when controller issued descent to wrong aircraft and lost separation.
| Attributes | |
| ACN | 743191 |
| Time | |
| Date | 200706 |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | navaid : esl.vortac |
| State Reference | WV |
| Altitude | msl single value : 24500 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : zdc.artcc |
| Operator | common carrier : air carrier |
| Make Model Name | A320 |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | other vortac |
| Flight Phase | descent : intermediate altitude |
| Flight Plan | IFR |
| Aircraft 2 | |
| Controlling Facilities | artcc : zdc.artcc |
| Operator | common carrier : air carrier |
| Make Model Name | DC-9 Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | other vortac |
| Flight Phase | descent : intermediate altitude |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | government : faa |
| Function | controller : handoff position |
| Qualification | controller : radar |
| Experience | controller radar : 20 controller supervisory : 3 controller time certified in position1 : 7 |
| ASRS Report | 743191 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Events | |
| Anomaly | conflict : airborne critical non adherence : required legal separation |
| Independent Detector | other controllera |
| Resolutory Action | controller : issued new clearance |
| Consequence | faa : investigated |
| Miss Distance | horizontal : 9000 vertical : 200 |
| Supplementary | |
| Problem Areas | ATC Human Performance |
| Primary Problem | ATC Human Performance |
| Air Traffic Incident | Operational Error |
Narrative:
One flow into 2 major airports. No mi in-trail restrs to help alleviate complexity. Need 2 arrival patterns instead of one. Radar controller mistook the aircraft on top as the iad arrival and descended aircraft. I noticed data block was not correct and informed radar controller who turned and climbed aircraft.
Original NASA ASRS Text
Title: ZDC ASSOC CTLR WITNESSED OPERROR AT 24500 FT WHEN CTLR ISSUED DESCENT TO WRONG ACFT AND LOST SEPARATION.
Narrative: ONE FLOW INTO 2 MAJOR ARPTS. NO MI IN-TRAIL RESTRS TO HELP ALLEVIATE COMPLEXITY. NEED 2 ARR PATTERNS INSTEAD OF ONE. RADAR CTLR MISTOOK THE ACFT ON TOP AS THE IAD ARR AND DSNDED ACFT. I NOTICED DATA BLOCK WAS NOT CORRECT AND INFORMED RADAR CTLR WHO TURNED AND CLBED ACFT.
Data retrieved from NASA's ASRS site as of January 2009 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.