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B757 aircraft on approach. Strong wind contributed to an ATC late turn onto final approach and aircraft overshot. When correcting back to course reporter aircraft received a TCASII RA and the other aircraft also received an RA. Both aircraft followed TCASII and then continued on approach.
| Attributes | |
| ACN | 352658 |
| Time | |
| Date | 199611 |
| Day | Fri |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | airport : dca |
| State Reference | DC |
| Altitude | msl bound lower : 3000 msl bound upper : 3000 |
| Environment | |
| Flight Conditions | IMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : dca tracon : geg |
| 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 |
| Route In Use | enroute : on vectors |
| Flight Plan | IFR |
| Aircraft 2 | |
| Make Model Name | Commercial Fixed Wing |
| Operating Under FAR Part | other : unknown |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 130 flight time total : 17000 flight time type : 600 |
| ASRS Report | 352658 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : commercial pilot : instrument |
| Events | |
| Anomaly | conflict : nmac inflight encounter : weather other anomaly other other spatial deviation |
| Independent Detector | other flight crewa |
| Resolutory Action | flight crew : took evasive action flight crew : returned to intended course or assigned course |
| Consequence | Other |
| Miss Distance | horizontal : 200 vertical : 200 |
| Supplementary | |
| Primary Problem | ATC Human Performance |
| Air Traffic Incident | Operational Error |
Narrative:
Our aircraft was vectored to intercept the washington lda/DME approach to runway 18. There was a strong wind (approximately 240 degrees at 50 KTS) at 3000 ft AGL and the controller turned us too late causing an overshoot to the east. The aircraft was on autoplt and the coupler captured the localizer as we went through. The autoplt continued the right turn to reintercept at a sharp angle and I then selected heading select 180 degrees to reintercept just outside the 10 DME. As we were joining the lda localizer at 3000 ft, approximately 13 DME, we received a TCASII TA followed immediately by a 'descend, descend now' alert. We complied. The other aircraft reported his TCASII RA as a 'climb.' when we were clear of conflict we continued the approach to a normal landing. I believe, but do not know, that the other aircraft was allowed to drift near the localizer while descending because of the strong wind. Our late turn-on and corrective action may have lessened the horizontal separation. I believe this was caused by a controller error in not considering the very strong winds when issuing turns.
Original NASA ASRS Text
Title: B757 ACFT ON APCH. STRONG WIND CONTRIBUTED TO AN ATC LATE TURN ONTO FINAL APCH AND ACFT OVERSHOT. WHEN CORRECTING BACK TO COURSE RPTR ACFT RECEIVED A TCASII RA AND THE OTHER ACFT ALSO RECEIVED AN RA. BOTH ACFT FOLLOWED TCASII AND THEN CONTINUED ON APCH.
Narrative: OUR ACFT WAS VECTORED TO INTERCEPT THE WASHINGTON LDA/DME APCH TO RWY 18. THERE WAS A STRONG WIND (APPROX 240 DEGS AT 50 KTS) AT 3000 FT AGL AND THE CTLR TURNED US TOO LATE CAUSING AN OVERSHOOT TO THE E. THE ACFT WAS ON AUTOPLT AND THE COUPLER CAPTURED THE LOC AS WE WENT THROUGH. THE AUTOPLT CONTINUED THE R TURN TO REINTERCEPT AT A SHARP ANGLE AND I THEN SELECTED HDG SELECT 180 DEGS TO REINTERCEPT JUST OUTSIDE THE 10 DME. AS WE WERE JOINING THE LDA LOC AT 3000 FT, APPROX 13 DME, WE RECEIVED A TCASII TA FOLLOWED IMMEDIATELY BY A 'DSND, DSND NOW' ALERT. WE COMPLIED. THE OTHER ACFT RPTED HIS TCASII RA AS A 'CLB.' WHEN WE WERE CLR OF CONFLICT WE CONTINUED THE APCH TO A NORMAL LNDG. I BELIEVE, BUT DO NOT KNOW, THAT THE OTHER ACFT WAS ALLOWED TO DRIFT NEAR THE LOC WHILE DSNDING BECAUSE OF THE STRONG WIND. OUR LATE TURN-ON AND CORRECTIVE ACTION MAY HAVE LESSENED THE HORIZ SEPARATION. I BELIEVE THIS WAS CAUSED BY A CTLR ERROR IN NOT CONSIDERING THE VERY STRONG WINDS WHEN ISSUING TURNS.
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.