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ZDC ARTCC radar controller misjudged spacing when he attempted to climb a HS25 and descended a B717 because of turbulence, resulting in a loss of separation.
| Attributes | |
| ACN | 573633 |
| Time | |
| Date | 200302 |
| Day | Fri |
| Local Time Of Day | 1801 To 2400 |
| Place | |
| Locale Reference | navaid : gve.vortac |
| State Reference | VA |
| Altitude | msl single value : 28000 |
| Environment | |
| Flight Conditions | IMC |
| Weather Elements | Turbulence |
| Light | Night |
| Aircraft 1 | |
| Controlling Facilities | artcc : zdc.artcc |
| Operator | general aviation : personal |
| Operating Under FAR Part | Part 91 |
| Flight Phase | climbout : vacating altitude cruise : enroute altitude change |
| Flight Plan | IFR |
| Aircraft 2 | |
| Controlling Facilities | artcc : zdc.artcc |
| Operator | common carrier : air carrier |
| Make Model Name | B717 (Formerly MD-95) |
| Operating Under FAR Part | Part 121 |
| Flight Phase | descent : vacating altitude |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | government : faa |
| Function | controller : radar |
| Qualification | controller : radar |
| Experience | controller military : 2.5 controller radar : 5.5 |
| ASRS Report | 573633 |
| Person 2 | |
| Affiliation | other |
| Function | flight crew : captain oversight : pic |
| Events | |
| Anomaly | conflict : airborne critical non adherence : published procedure non adherence : required legal separation |
| Independent Detector | atc equipment : conflict alert atc equipment other atc equipment : radar other controllera other flight crewa other flight crewb |
| Resolutory Action | none taken : anomaly accepted |
| Consequence | faa : investigated |
| Miss Distance | horizontal : 25200 vertical : 600 |
| Supplementary | |
| Problem Areas | ATC Human Performance |
| Primary Problem | ATC Human Performance |
| Air Traffic Incident | Operational Error |
Narrative:
I climbed the HS25 and tried to descend the B717 due to choppy rides. The result was a loss of separation. To prevent a reoccurrence, I need to take more time to analyze the situation.
Original NASA ASRS Text
Title: ZDC ARTCC RADAR CTLR MISJUDGED SPACING WHEN HE ATTEMPTED TO CLB A HS25 AND DSNDED A B717 BECAUSE OF TURB, RESULTING IN A LOSS OF SEPARATION.
Narrative: I CLBED THE HS25 AND TRIED TO DSND THE B717 DUE TO CHOPPY RIDES. THE RESULT WAS A LOSS OF SEPARATION. TO PREVENT A REOCCURRENCE, I NEED TO TAKE MORE TIME TO ANALYZE THE SIT.
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.