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B-737 flight crew and ATC confusion regarding 'west' and 'wesla' transition terminology on the sfo SERFR1 STAR results in a heading deviation.
| Attributes | |
| ACN | 1246110 |
| Time | |
| Date | 201503 |
| Local Time Of Day | 0601-1200 |
| Place | |
| Locale Reference | NCT.TRACON |
| State Reference | CA |
| Environment | |
| Flight Conditions | VMC |
| Aircraft 1 | |
| Make Model Name | B737 Undifferentiated or Other Model |
| Flight Phase | Descent |
| Route In Use | STAR SERFR ONE |
| Person 1 | |
| Function | Captain |
| Qualification | Flight Crew Air Transport Pilot (ATP) |
| Experience | Flight Crew Last 90 Days 210 Flight Crew Total 15000 Flight Crew Type 210 |
| Events | |
| Anomaly | ATC Issue All Types Deviation - Track / Heading All Types |
Narrative:
Cleared to descend on the serfr 1 STAR and given a 'west' transition. Thought we heard previous aircraft get the 'wesla' transition and asked if we could expect the same - ATC answer was affirmative. We plugged in the 'wesla' transition expecting a wraparound to Rwy28 or maybe something else. As we started down that fork; ATC asked our intentions and [we] told them we were on our way to 'wesla.' what they really wanted was the 'west' transition to Rwy28. Turned back on course to menlo for the 28L ILS uneventfully.
Original NASA ASRS Text
Title: B-737 flight crew and ATC confusion regarding 'West' and 'WESLA' transition terminology on the SFO SERFR1 STAR results in a heading deviation.
Narrative: Cleared to descend on the SERFR 1 STAR and given a 'West' transition. Thought we heard previous aircraft get the 'Wesla' transition and asked if we could expect the same - ATC answer was affirmative. We plugged in the 'Wesla' transition expecting a wraparound to Rwy28 or maybe something else. As we started down that fork; ATC asked our intentions and [we] told them we were on our way to 'Wesla.' What they really wanted was the 'West' transition to Rwy28. Turned back on course to Menlo for the 28L ILS uneventfully.
Data retrieved from NASA's ASRS site 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.