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37000 Feet | Browse and search NASA's Aviation Safety Reporting System |
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Approach controller vectoring an MD88 for visual approach to runway 35C turned and descended the aircraft into a conflict with a B727 on a vector for a parallel runway. The MD88 saw the B727 and received a TCASII RA and climbed over the top of the B727. Controller reporter misjudged the winds and the turn of the B727.
| Attributes | |
| ACN | 367494 |
| Time | |
| Date | 199705 |
| Day | Fri |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | airport : dfw |
| State Reference | TX |
| Altitude | msl bound lower : 4000 msl bound upper : 4600 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : dfw |
| Operator | common carrier : air carrier |
| Make Model Name | B727 Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Flight Phase | descent other |
| Route In Use | enroute : on vectors |
| Flight Plan | IFR |
| Aircraft 2 | |
| Operator | common carrier : air carrier |
| Make Model Name | MD-88 |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | Other Other |
| Flight Phase | cruise other descent : approach |
| Route In Use | enroute : on vectors |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | government : faa |
| Function | controller : approach |
| Qualification | controller : radar |
| Experience | controller military : 7 controller radar : 14 |
| ASRS Report | 367494 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 180 flight time total : 8500 flight time type : 2500 |
| ASRS Report | 367552 |
| Events | |
| Anomaly | conflict : airborne less severe non adherence : required legal separation other anomaly other |
| Independent Detector | aircraft equipment other aircraft equipment : unspecified other flight crewa |
| Resolutory Action | controller : issued new clearance flight crew : took evasive action |
| Consequence | Other |
| Miss Distance | horizontal : 5500 vertical : 600 |
| Supplementary | |
| Primary Problem | ATC Human Performance |
| Air Traffic Incident | Operational Error |
Narrative:
Aircraft #1 vectored on a base turn from downwind east to runway 35C at dfw. Aircraft #2 dogleg to final from southeast to runway 35R at dfw. Aircraft #1 was to turn behind aircraft #2 both at 4000 ft, however, turn was made very rapidly with strong winds aloft. Aircraft #1 responded to TCASII and climbed to avoid aircraft #2.
Original NASA ASRS Text
Title: APCH CTLR VECTORING AN MD88 FOR VISUAL APCH TO RWY 35C TURNED AND DSNDED THE ACFT INTO A CONFLICT WITH A B727 ON A VECTOR FOR A PARALLEL RWY. THE MD88 SAW THE B727 AND RECEIVED A TCASII RA AND CLBED OVER THE TOP OF THE B727. CTLR RPTR MISJUDGED THE WINDS AND THE TURN OF THE B727.
Narrative: ACFT #1 VECTORED ON A BASE TURN FROM DOWNWIND E TO RWY 35C AT DFW. ACFT #2 DOGLEG TO FINAL FROM SE TO RWY 35R AT DFW. ACFT #1 WAS TO TURN BEHIND ACFT #2 BOTH AT 4000 FT, HOWEVER, TURN WAS MADE VERY RAPIDLY WITH STRONG WINDS ALOFT. ACFT #1 RESPONDED TO TCASII AND CLBED TO AVOID ACFT #2.
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.