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A B767 flight crew elected to take off with tailwinds in excess of aircraft operational limits at dfw.
| Attributes | |
| ACN | 451648 |
| Time | |
| Date | 199910 |
| Day | Mon |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | airport : dfw.airport |
| State Reference | TX |
| Altitude | agl single value : 0 |
| Environment | |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tower : dfw.tower |
| Operator | common carrier : air carrier |
| Make Model Name | B767 Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | other |
| Flight Phase | climbout : takeoff |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| ASRS Report | 451648 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : instrument pilot : multi engine pilot : commercial |
| ASRS Report | 451647 |
| Events | |
| Anomaly | non adherence : published procedure non adherence : company policies |
| Independent Detector | other flight crewa other flight crewb |
| Resolutory Action | none taken : anomaly accepted |
| Supplementary | |
| Problem Areas | Flight Crew Human Performance |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | Pilot Deviation |
Narrative:
XA10Z, 126.55, dfw tower, runway 17R. While waiting for takeoff runway 17R, tower reported the wind at 020 degrees at 10 KTS gusting to 16 KTS. This wind was obviously in error since the windsocks for runway 17R were simply limp and twisting. Furthermore, there were no fronts scheduled to go through dfw all day. We configured for a maximum tailwind of 10 KT takeoff and took off without incident. Do we have to accept tower winds as limiting when they are so obvious in error? I have heard that they have had difficulty with an accurate wind reading using the present equipment.
Original NASA ASRS Text
Title: A B767 FLC ELECTED TO TAKE OFF WITH TAILWINDS IN EXCESS OF ACFT OPERATIONAL LIMITS AT DFW.
Narrative: XA10Z, 126.55, DFW TWR, RWY 17R. WHILE WAITING FOR TKOF RWY 17R, TWR RPTED THE WIND AT 020 DEGS AT 10 KTS GUSTING TO 16 KTS. THIS WIND WAS OBVIOUSLY IN ERROR SINCE THE WINDSOCKS FOR RWY 17R WERE SIMPLY LIMP AND TWISTING. FURTHERMORE, THERE WERE NO FRONTS SCHEDULED TO GO THROUGH DFW ALL DAY. WE CONFIGURED FOR A MAX TAILWIND OF 10 KT TKOF AND TOOK OFF WITHOUT INCIDENT. DO WE HAVE TO ACCEPT TWR WINDS AS LIMITING WHEN THEY ARE SO OBVIOUS IN ERROR? I HAVE HEARD THAT THEY HAVE HAD DIFFICULTY WITH AN ACCURATE WIND READING USING THE PRESENT EQUIP.
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.