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Operational error when radar vectoring creates a potential conflict less than standard separation. Evasive action climb. Go around solves the crisis.
| Attributes | |
| ACN | 352267 |
| Time | |
| Date | 199611 |
| Day | Fri |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | airport : dca |
| State Reference | DC |
| Altitude | msl bound lower : 2000 msl bound upper : 3000 |
| Environment | |
| Flight Conditions | IMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : dca |
| Operator | common carrier : air carrier |
| Make Model Name | Commercial Fixed Wing |
| Operating Under FAR Part | Part 121 |
| Flight Phase | descent : approach descent other landing : go around |
| Route In Use | arrival other enroute : on vectors |
| Flight Plan | IFR |
| Aircraft 2 | |
| Operator | common carrier : air carrier |
| Make Model Name | B757 Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | Other Other |
| Flight Phase | descent : approach descent other |
| Route In Use | arrival other enroute : on vectors |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 200 flight time total : 16000 flight time type : 200 |
| ASRS Report | 352267 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : commercial pilot : instrument |
| Events | |
| Anomaly | conflict : airborne less severe non adherence : required legal separation other anomaly other |
| Independent Detector | aircraft equipment other aircraft equipment : unspecified |
| Resolutory Action | flight crew : took evasive action flight crew : exited adverse environment other |
| Consequence | faa : reviewed incident with flight crew |
| Miss Distance | horizontal : 1080 vertical : 250 |
| Supplementary | |
| Primary Problem | ATC Human Performance |
| Air Traffic Incident | Operational Error other |
Narrative:
Approach control at dca gave us a descent from 3000 ft to 2000 ft. We were following a B757 on the lda runway 18 approach to dca. At 2500 ft we got a TCASII alert to climb, which we did. The controller gave the B757 a heading and us a heading that brought us within 200-300 ft vertical separation. Lateral separation was no more than 1/8-1/4 mi. Called approach once on ground and spoke to the supervisor in charge. No action was taken on my part.
Original NASA ASRS Text
Title: OPERROR WHEN RADAR VECTORING CREATES A POTENTIAL CONFLICT LTSS. EVASIVE ACTION CLB. GAR SOLVES THE CRISIS.
Narrative: APCH CTL AT DCA GAVE US A DSCNT FROM 3000 FT TO 2000 FT. WE WERE FOLLOWING A B757 ON THE LDA RWY 18 APCH TO DCA. AT 2500 FT WE GOT A TCASII ALERT TO CLB, WHICH WE DID. THE CTLR GAVE THE B757 A HDG AND US A HDG THAT BROUGHT US WITHIN 200-300 FT VERT SEPARATION. LATERAL SEPARATION WAS NO MORE THAN 1/8-1/4 MI. CALLED APCH ONCE ON GND AND SPOKE TO THE SUPVR IN CHARGE. NO ACTION WAS TAKEN ON MY PART.
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.