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ARTCC radar controller issues climb clearance to a B757, incorrectly judging separation between another company air carrier and an en route BE20. Realizing a conflict between the B757 and BE20, the controller descends the B757, but the error occurs.
| Attributes | |
| ACN | 421658 |
| Time | |
| Date | 199812 |
| Day | Thu |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | atc facility : aml |
| State Reference | VA |
| Altitude | msl bound lower : 21300 msl bound upper : 22000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Operator | common carrier : air carrier |
| Make Model Name | B757 Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | Other |
| Flight Phase | cruise other |
| Flight Plan | IFR |
| Aircraft 2 | |
| Operator | general aviation : personal |
| Make Model Name | Super King Air 200/Huron |
| Operating Under FAR Part | Part 91 |
| Flight Phase | cruise other |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | government : faa |
| Function | controller : radar |
| Experience | controller non radar : 17 controller radar : 13 |
| ASRS Report | 421658 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Events | |
| Anomaly | conflict : airborne less severe non adherence : required legal separation non adherence : published procedure |
| Independent Detector | other controllera |
| Consequence | faa : investigated |
| Miss Distance | horizontal : 24000 vertical : 700 |
| Supplementary | |
| Air Traffic Incident | Operational Error |
Narrative:
I was working both aircraft. The B757 also had company traffic. When he vacated FL230, I climbed aircraft #1. Within 20 seconds, I realized the BE20 was still traffic and told aircraft #1 to maintain FL210, but he climbed to FL213 before descending. The sector was not busy. I had had a bad cold and was on sick leave my 2 previous assigned shifts. In hindsight, I realize I was still run down and tired and should have taken another day to recover, but I did not want to be a 'malingerer.'
Original NASA ASRS Text
Title: ARTCC RADAR CTLR ISSUES CLB CLRNC TO A B757, INCORRECTLY JUDGING SEPARATION BTWN ANOTHER COMPANY ACR AND AN ENRTE BE20. REALIZING A CONFLICT BTWN THE B757 AND BE20, THE CTLR DSNDS THE B757, BUT THE ERROR OCCURS.
Narrative: I WAS WORKING BOTH ACFT. THE B757 ALSO HAD COMPANY TFC. WHEN HE VACATED FL230, I CLBED ACFT #1. WITHIN 20 SECONDS, I REALIZED THE BE20 WAS STILL TFC AND TOLD ACFT #1 TO MAINTAIN FL210, BUT HE CLBED TO FL213 BEFORE DSNDING. THE SECTOR WAS NOT BUSY. I HAD HAD A BAD COLD AND WAS ON SICK LEAVE MY 2 PREVIOUS ASSIGNED SHIFTS. IN HINDSIGHT, I REALIZE I WAS STILL RUN DOWN AND TIRED AND SHOULD HAVE TAKEN ANOTHER DAY TO RECOVER, BUT I DID NOT WANT TO BE A 'MALINGERER.'
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.