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B777 flight crew turn the opposite way when ARTCC controller instructed them to turn 15 degrees for opposite direction traffic.
| Attributes | |
| ACN | 539446 |
| Time | |
| Date | 200202 |
| Day | Tue |
| Local Time Of Day | 1801 To 2400 |
| Place | |
| Locale Reference | airport : mli.airport |
| State Reference | IL |
| Altitude | msl single value : 41000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Night |
| Aircraft 1 | |
| Controlling Facilities | artcc : zau.artcc |
| Operator | common carrier : air carrier |
| Make Model Name | B777 Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | other |
| Flight Plan | IFR |
| Aircraft 2 | |
| Controlling Facilities | artcc : zau.artcc |
| Operator | common carrier : air carrier |
| Make Model Name | Commercial Fixed Wing |
| Operating Under FAR Part | Part 121 |
| Flight Phase | cruise : level |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 80 flight time type : 14600 |
| ASRS Report | 539446 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Events | |
| Anomaly | non adherence : clearance other spatial deviation |
| Independent Detector | other controllera |
| Resolutory Action | controller : separated traffic controller : issued alert flight crew : returned to intended or assigned course |
| Consequence | faa : reviewed incident with flight crew |
| Miss Distance | horizontal : 24000 vertical : 0 |
| Supplementary | |
| Problem Areas | Flight Crew Human Performance |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | Pilot Deviation |
Narrative:
We were flying wrong way (wbound) at FL410 due to turbulence below. The controller asked for a 15 degree turn for traffic. We believe we heard 15L and read back 15L and the new heading. The controller then asked if we turned left or right. We replied left, and were told to turn right. TCASII displayed a traffic alert, yellow target, and we passed same altitude at approximately 4 mi.
Original NASA ASRS Text
Title: B777 FLC TURN THE OPPOSITE WAY WHEN ARTCC CTLR INSTRUCTED THEM TO TURN 15 DEGS FOR OPPOSITE DIRECTION TFC.
Narrative: WE WERE FLYING WRONG WAY (WBOUND) AT FL410 DUE TO TURB BELOW. THE CTLR ASKED FOR A 15 DEG TURN FOR TFC. WE BELIEVE WE HEARD 15L AND READ BACK 15L AND THE NEW HDG. THE CTLR THEN ASKED IF WE TURNED L OR R. WE REPLIED L, AND WERE TOLD TO TURN R. TCASII DISPLAYED A TFC ALERT, YELLOW TARGET, AND WE PASSED SAME ALT AT APPROX 4 MI.
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.