|37000 Feet||Browse and search NASA's
Aviation Safety Reporting System
|Local Time Of Day||0601 To 1200|
|Locale Reference||atc facility : ccc|
|Altitude||msl bound lower : 4800|
msl bound upper : 5600
|Operator||common carrier : air taxi|
|Make Model Name||Small Transport, Low Wing, 2 Turboprop Eng|
|Flight Phase||cruise other|
|Route In Use||enroute airway : n90|
|Operator||general aviation : personal|
|Make Model Name||Small Aircraft, Low Wing, 1 Eng, Retractable Gear|
|Flight Phase||cruise other|
|Affiliation||government : faa|
|Function||controller : approach|
oversight : supervisor
|Qualification||controller : radar|
|Function||flight crew : captain|
oversight : pic
|Qualification||pilot : atp|
|Anomaly||conflict : airborne less severe|
non adherence : required legal separation
|Independent Detector||atc equipment other atc equipment : unspecified|
|Resolutory Action||controller : issued new clearance|
|Miss Distance||horizontal : 3000|
vertical : 800
|Primary Problem||ATC Human Performance|
|Air Traffic Incident||Operational Error|
Small transport X at 5000', small aircraft Y at 6000'. Descended the small aircraft Y instead of the small transport X to 4000'. It came to my attention when the C/a sounded off. I immediately descended small transport X to 4000' and stopped small aircraft Y at 5000'. I attempted to apply visual sep to both aircraft, but accomplished this after the fact of lack of sep (800' + 1/2 mi). There were no contributing factors except for myself, human error, I was hasty when I wanted the small transport X to descend, instead descended the wrong one. I was also busy working 2 positions combined with 9 aircraft. There is no set rule from preventing this happening again. But, I've learned to review my strips more and to think more about what I'm saying before actually saying it. This situation has helped me build my awareness. You learn by your mistakes, really holds true and I am grateful that it wasn't more serious.
Original NASA ASRS Text
Title: SUPVR WORKING COMBINED POSITION OPERATION DESCENDED THE WRONG ACFT AND HAD LESS THAN STANDARD SEPARATION.
Narrative: SMT X AT 5000', SMA Y AT 6000'. DSNDED THE SMA Y INSTEAD OF THE SMT X TO 4000'. IT CAME TO MY ATTN WHEN THE C/A SOUNDED OFF. I IMMEDIATELY DSNDED SMT X TO 4000' AND STOPPED SMA Y AT 5000'. I ATTEMPTED TO APPLY VISUAL SEP TO BOTH ACFT, BUT ACCOMPLISHED THIS AFTER THE FACT OF LACK OF SEP (800' + 1/2 MI). THERE WERE NO CONTRIBUTING FACTORS EXCEPT FOR MYSELF, HUMAN ERROR, I WAS HASTY WHEN I WANTED THE SMT X TO DSND, INSTEAD DSNDED THE WRONG ONE. I WAS ALSO BUSY WORKING 2 POSITIONS COMBINED WITH 9 ACFT. THERE IS NO SET RULE FROM PREVENTING THIS HAPPENING AGAIN. BUT, I'VE LEARNED TO REVIEW MY STRIPS MORE AND TO THINK MORE ABOUT WHAT I'M SAYING BEFORE ACTUALLY SAYING IT. THIS SITUATION HAS HELPED ME BUILD MY AWARENESS. YOU LEARN BY YOUR MISTAKES, REALLY HOLDS TRUE AND I AM GRATEFUL THAT IT WASN'T MORE SERIOUS.
Data retrieved from NASA's ASRS site as of August 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.