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ARTCC radar controller incorrectly analyzes converging control situation and assigns a jet the same route and altitude as a propeller aircraft, resulting in loss of separation.
| Attributes | |
| ACN | 425819 |
| Time | |
| Date | 199901 |
| Day | Fri |
| Local Time Of Day | 1801 To 2400 |
| Place | |
| Locale Reference | atc facility : zdc |
| State Reference | DC |
| Altitude | msl bound lower : 17000 msl bound upper : 17000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Night |
| Aircraft 1 | |
| Make Model Name | Any Unknown or Unlisted Aircraft Manufacturer |
| Flight Plan | IFR |
| Aircraft 2 | |
| Make Model Name | Any Unknown or Unlisted Aircraft Manufacturer |
| Flight Phase | climbout : intermediate altitude |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | government : faa |
| Function | controller : radar |
| ASRS Report | 425819 |
| Person 2 | |
| Function | flight crew : single pilot |
| Events | |
| Anomaly | conflict : airborne less severe non adherence : required legal separation non adherence : published procedure |
| Independent Detector | atc equipment other atc equipment : unspecified |
| Resolutory Action | none taken : detected after the fact |
| Consequence | faa : investigated |
| Miss Distance | horizontal : 15000 vertical : 700 |
| Supplementary | |
| Air Traffic Incident | Operational Error |
Narrative:
Slower propeller aircraft X was assigned same altitude as faster jet aircraft Y already at that altitude. Controller thought the jet was climbing to a higher altitude.
Original NASA ASRS Text
Title: ARTCC RADAR CTLR INCORRECTLY ANALYZES CONVERGING CTL SIT AND ASSIGNS A JET THE SAME RTE AND ALT AS A PROP ACFT, RESULTING IN LOSS OF SEPARATION.
Narrative: SLOWER PROP ACFT X WAS ASSIGNED SAME ALT AS FASTER JET ACFT Y ALREADY AT THAT ALT. CTLR THOUGHT THE JET WAS CLBING TO A HIGHER ALT.
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.