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Avp controller experienced operational error at 8000 ft during busy traffic period with WX factors increasing workload.
| Attributes | |
| ACN | 668802 |
| Time | |
| Date | 200508 |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | navaid : lvz.vortac |
| State Reference | PA |
| Altitude | msl single value : 8000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : avp.tracon |
| Operator | common carrier : air carrier |
| Make Model Name | Dash 8 Series Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Flight Phase | cruise : level |
| Flight Plan | IFR |
| Aircraft 2 | |
| Controlling Facilities | tracon : avp.tracon |
| Operator | general aviation : personal |
| Make Model Name | TBM 700 |
| Operating Under FAR Part | Part 91 |
| Flight Phase | cruise : level |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | government : faa |
| Function | controller : approach |
| Qualification | controller : radar |
| Experience | controller radar : 2 controller time certified in position2 : 10 |
| ASRS Report | 668802 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain |
| Events | |
| Anomaly | conflict : airborne critical non adherence : required legal separation |
| Independent Detector | atc equipment : conflict alert aircraft equipment : tcas other controllera |
| Resolutory Action | controller : issued alert controller : issued new clearance flight crew : took evasive action |
| Consequence | faa : investigated |
| Miss Distance | horizontal : 6000 vertical : 300 |
| Supplementary | |
| Problem Areas | ATC Human Performance Weather |
| Primary Problem | ATC Human Performance |
| Air Traffic Incident | Operational Error |
Narrative:
I was working radar with large WX system moving through my sector; and was busy (approximately 9-12 aircraft) on frequency. I became distraction by pilot requests and landline coordination; and failed to notice the 2 aircraft on converging flight paths at 8000 ft. The DH8 pilot responded to a TCASII RA and descended to 7400. The TMB7 pilot visually acquired the DH8; and I instructed him to maintain visual separation from the DH8. I believe this operational error occurred due in part to my failure to request assistance from other controllers; and my decision to prioritize pilot and controller requests before doublechking the position of all the aircraft under my control.
Original NASA ASRS Text
Title: AVP CTLR EXPERIENCED OPERROR AT 8000 FT DURING BUSY TFC PERIOD WITH WX FACTORS INCREASING WORKLOAD.
Narrative: I WAS WORKING RADAR WITH LARGE WX SYS MOVING THROUGH MY SECTOR; AND WAS BUSY (APPROX 9-12 ACFT) ON FREQ. I BECAME DISTR BY PLT REQUESTS AND LANDLINE COORD; AND FAILED TO NOTICE THE 2 ACFT ON CONVERGING FLT PATHS AT 8000 FT. THE DH8 PLT RESPONDED TO A TCASII RA AND DSNDED TO 7400. THE TMB7 PLT VISUALLY ACQUIRED THE DH8; AND I INSTRUCTED HIM TO MAINTAIN VISUAL SEPARATION FROM THE DH8. I BELIEVE THIS OPERROR OCCURRED DUE IN PART TO MY FAILURE TO REQUEST ASSISTANCE FROM OTHER CTLRS; AND MY DECISION TO PRIORITIZE PLT AND CTLR REQUESTS BEFORE DOUBLECHKING THE POS OF ALL THE ACFT UNDER MY CTL.
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.