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Pct controller experienced operational error at 7000 ft while vectoring departure around landing downwind traffic.
| Attributes | |
| ACN | 628155 |
| Time | |
| Date | 200408 |
| Day | Thu |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | airport : dca.airport |
| State Reference | DC |
| Altitude | agl single value : 7000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : pct.tracon tower : sea.tower |
| Operator | common carrier : air carrier |
| Make Model Name | Regional Jet CL65, Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Flight Phase | climbout : initial climbout : intermediate altitude |
| Route In Use | departure : on vectors |
| Flight Plan | IFR |
| Aircraft 2 | |
| Controlling Facilities | tracon : pct.tracon |
| Operator | common carrier : air carrier |
| Make Model Name | EMB ERJ 145 ER&LR |
| Operating Under FAR Part | Part 121 |
| Flight Phase | descent : approach descent : intermediate altitude |
| Route In Use | arrival : on vectors |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | government : faa |
| Function | controller : approach |
| Qualification | controller : radar |
| Experience | controller radar : 15 controller time certified in position1 : 10 controller time certified in position2 : 6 |
| ASRS Report | 628155 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| 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 new clearance controller : issued alert |
| Consequence | faa : investigated |
| Miss Distance | horizontal : 9000 vertical : 400 |
| Supplementary | |
| Problem Areas | ATC Human Performance |
| Air Traffic Incident | Operational Error |
Narrative:
I was working the tyson position in the mtv sector of pct. Air carrier X was a sbound departure off of dca's runway 19. I had radar contact on air carrier X and turned him to a 290 degree heading at 5 DME and climbed him to 5000 ft. Air carrier Y, an arrival to dca's runway 19, was turned to the downwind and descended to 6000 ft. A few mi later I turned air carrier X further right to a 330 degree heading and climbed him to 17000 ft. I believed I had adequate spacing. Approximately 5 mi later, 15 mi northwest of dca, separation was lost between air carrier X and air carrier Y. I realized that there was a problem and turned air carrier X to a 270 degree heading, air carrier X advised me he was responding to a resolution alert. I advised the operations supervisor and was relieved of the position.
Original NASA ASRS Text
Title: PCT CTLR EXPERIENCED OPERROR AT 7000 FT WHILE VECTORING DEP AROUND LNDG DOWNWIND TFC.
Narrative: I WAS WORKING THE TYSON POS IN THE MTV SECTOR OF PCT. ACR X WAS A SBOUND DEP OFF OF DCA'S RWY 19. I HAD RADAR CONTACT ON ACR X AND TURNED HIM TO A 290 DEG HDG AT 5 DME AND CLBED HIM TO 5000 FT. ACR Y, AN ARR TO DCA'S RWY 19, WAS TURNED TO THE DOWNWIND AND DSNDED TO 6000 FT. A FEW MI LATER I TURNED ACR X FURTHER R TO A 330 DEG HDG AND CLBED HIM TO 17000 FT. I BELIEVED I HAD ADEQUATE SPACING. APPROX 5 MI LATER, 15 MI NW OF DCA, SEPARATION WAS LOST BTWN ACR X AND ACR Y. I REALIZED THAT THERE WAS A PROB AND TURNED ACR X TO A 270 DEG HDG, ACR X ADVISED ME HE WAS RESPONDING TO A RESOLUTION ALERT. I ADVISED THE OPS SUPVR AND WAS RELIEVED OF THE POS.
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.