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Air carrier X had less than standard separation less than standard radar separation from small aircraft Y. System error.
| Attributes | |
| ACN | 180174 |
| Time | |
| Date | 199106 |
| Day | Tue |
| Local Time Of Day | 1801 To 2400 |
| Place | |
| Locale Reference | atc facility : buf |
| State Reference | NY |
| Altitude | msl bound lower : 12000 msl bound upper : 13000 |
| Aircraft 1 | |
| Controlling Facilities | artcc : zob artcc : muha |
| Operator | common carrier : air carrier |
| Make Model Name | Medium Large Transport, Low Wing, 2 Turbojet Eng |
| Flight Phase | climbout : intermediate altitude |
| Route In Use | enroute : on vectors |
| Flight Plan | IFR |
| Aircraft 2 | |
| Operator | general aviation : personal |
| Make Model Name | Small Aircraft, Low Wing, 1 Eng, Retractable Gear |
| Flight Phase | cruise other |
| Route In Use | enroute : direct |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | government : faa |
| Function | controller : radar |
| Qualification | controller : radar |
| Experience | controller radar : 18 |
| ASRS Report | 180174 |
| Person 2 | |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Events | |
| Anomaly | conflict : airborne less severe non adherence : published procedure non adherence : required legal separation |
| Independent Detector | atc equipment other atc equipment : unspecified |
| Resolutory Action | controller : issued new clearance |
| Consequence | faa : investigated |
| Miss Distance | horizontal : 24000 vertical : 200 |
| Supplementary | |
| Primary Problem | ATC Human Performance |
| Air Traffic Incident | Operational Error |
Narrative:
Air carrier X turbojet departed rochester, ny airport using runway 4 with a left turn flight plan route to pittsburgh, PA, reported on frequency vacating 6000 for 10000. Air carrier X was assigned H228 radar vector for climb to requested altitude, established on assigned cleared to climb to and maintain FL220. Radar vector was assigned to take air carrier X west of small aircraft Y at 130 eastbound V14 at 130. Controller attention was diverted to airspace north of this area where a military fgt was recovering from military airspace and conflict alert was activated with other fgt's in military airspace. My attention returned to air carrier X and small aircraft Y when conflict alert was again activated. Air carrier X data block showed 11.8 and about 7-8 mi at 8 O'clock to small aircraft Y. Air carrier X was cleared right turn 30 degree descend to 120. Air carrier X reported vacating 12.6 for 120 and turning right 30 degree. Small aircraft Y was given right turn 30 degree, but that transmission was blocked. Separation was lost at this point and time.
Original NASA ASRS Text
Title: ACR X HAD LTSS LESS THAN STANDARD RADAR SEPARATION FROM SMA Y. SYS ERROR.
Narrative: ACR X TURBOJET DEPARTED ROCHESTER, NY ARPT USING RWY 4 WITH A L TURN FLT PLAN RTE TO PITTSBURGH, PA, RPTED ON FREQ VACATING 6000 FOR 10000. ACR X WAS ASSIGNED H228 RADAR VECTOR FOR CLB TO REQUESTED ALT, ESTABLISHED ON ASSIGNED CLRED TO CLB TO AND MAINTAIN FL220. RADAR VECTOR WAS ASSIGNED TO TAKE ACR X W OF SMA Y AT 130 EBOUND V14 AT 130. CTLR ATTN WAS DIVERTED TO AIRSPACE N OF THIS AREA WHERE A MIL FGT WAS RECOVERING FROM MIL AIRSPACE AND CONFLICT ALERT WAS ACTIVATED WITH OTHER FGT'S IN MIL AIRSPACE. MY ATTN RETURNED TO ACR X AND SMA Y WHEN CONFLICT ALERT WAS AGAIN ACTIVATED. ACR X DATA BLOCK SHOWED 11.8 AND ABOUT 7-8 MI AT 8 O'CLOCK TO SMA Y. ACR X WAS CLRED R TURN 30 DEG DSND TO 120. ACR X RPTED VACATING 12.6 FOR 120 AND TURNING R 30 DEG. SMA Y WAS GIVEN R TURN 30 DEG, BUT THAT XMISSION WAS BLOCKED. SEPARATION WAS LOST AT THIS POINT AND TIME.
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.