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ZBW controller experienced operational error at approximately 16000 ft utilizing radar vectors with descending and climbing aircraft.
| Attributes | |
| ACN | 658388 |
| Time | |
| Date | 200505 |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | navaid : ign.vor |
| State Reference | NY |
| Altitude | msl bound lower : 11600 msl bound upper : 12000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : zbw.artcc |
| Operator | common carrier : air carrier |
| Make Model Name | Regional Jet 200 ER&LR |
| Operating Under FAR Part | Part 121 |
| Flight Phase | climbout : initial ground : maintenance |
| Route In Use | departure : on vectors |
| Flight Plan | IFR |
| Aircraft 2 | |
| Controlling Facilities | artcc : zbw.artcc |
| Operator | common carrier : air carrier |
| Make Model Name | Brasilia EMB-120 All Series |
| Operating Under FAR Part | Part 121 |
| Flight Phase | descent : intermediate altitude |
| Route In Use | arrival : on vectors |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | government : faa |
| Function | controller : radar |
| Qualification | controller : radar |
| Experience | controller radar : 17 controller time certified in position1 : 6 |
| ASRS Report | 658388 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Events | |
| Anomaly | conflict : airborne less severe non adherence : required legal separation |
| Independent Detector | atc equipment : conflict alert other controllera |
| Resolutory Action | controller : issued alert |
| Miss Distance | horizontal : 10560 vertical : 400 |
| Supplementary | |
| Problem Areas | ATC Human Performance |
| Primary Problem | ATC Human Performance |
| Air Traffic Incident | Operational Error |
Narrative:
Aircraft #1 was climbing out of stewart airport; 20 degrees right of course; to 17000 ft. Aircraft #2 was descending eastbound out of 11000 ft to 7000 ft (also turned 20 degrees right of course). I believed I had 3 mi until aircraft #1 reported aircraft #2 in sight then aircraft #1 was told to maintain visual separation; and cleared on course. The traffic was in a single sight radar area. The conflict alert often goes off with these aircraft because 3 mi separation is allowed. However; the parameters are set at 5 mi. This becomes distracting at times because it is not an accurate depiction of separation issues.
Original NASA ASRS Text
Title: ZBW CTLR EXPERIENCED OPERROR AT APPROX 16000 FT UTILIZING RADAR VECTORS WITH DSNDING AND CLBING ACFT.
Narrative: ACFT #1 WAS CLBING OUT OF STEWART ARPT; 20 DEGS R OF COURSE; TO 17000 FT. ACFT #2 WAS DSNDING EBOUND OUT OF 11000 FT TO 7000 FT (ALSO TURNED 20 DEGS R OF COURSE). I BELIEVED I HAD 3 MI UNTIL ACFT #1 RPTED ACFT #2 IN SIGHT THEN ACFT #1 WAS TOLD TO MAINTAIN VISUAL SEPARATION; AND CLRED ON COURSE. THE TFC WAS IN A SINGLE SIGHT RADAR AREA. THE CONFLICT ALERT OFTEN GOES OFF WITH THESE ACFT BECAUSE 3 MI SEPARATION IS ALLOWED. HOWEVER; THE PARAMETERS ARE SET AT 5 MI. THIS BECOMES DISTRACTING AT TIMES BECAUSE IT IS NOT AN ACCURATE DEPICTION OF SEPARATION ISSUES.
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.