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B-737 pilot reported confusion between ATC and the flight crew concerning which fix they had been cleared to.
| Attributes | |
| ACN | 1579666 |
| Time | |
| Date | 201809 |
| Local Time Of Day | 1201-1800 |
| Place | |
| Locale Reference | ZOA.ARTCC |
| State Reference | CA |
| Environment | |
| Flight Conditions | VMC |
| Aircraft 1 | |
| Make Model Name | B737 Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Flight Phase | Cruise |
| Flight Plan | IFR |
| Person 1 | |
| Function | Pilot Not Flying First Officer |
| Experience | Flight Crew Last 90 Days 250 Flight Crew Total 16450 Flight Crew Type 8282 |
| Events | |
| Anomaly | ATC Issue All Types Deviation - Procedural Clearance Deviation - Track / Heading All Types |
Narrative:
While flying our flight planned route enroute to sfo we were given a direct-to fix along the serfr 3 RNAV arrival. We both heard and verified what we believed to be the fix narwl and proceeded in LNAV direct. At approximately abeam wwavs on the arrival ATC asked us to confirm the fix we were proceeding to and I read back narwl. At that point ATC assigned us a descend to altitude along with a frequency change and said good day. We switched frequencies; checked in; and were cleared the remainder on the arrival and tipp toe visual 28L. The query by ATC and review of the serfr 3 arrival made me question myself if we were actually supposed to proceed to nrrli and no narwl. Two very similar sounding fixes along the arrival.
Original NASA ASRS Text
Title: B-737 pilot reported confusion between ATC and the flight crew concerning which fix they had been cleared to.
Narrative: While flying our flight planned route enroute to SFO we were given a direct-to fix along the SERFR 3 RNAV Arrival. We both heard and verified what we believed to be the fix NARWL and proceeded in LNAV Direct. At approximately abeam WWAVS on the arrival ATC asked us to confirm the fix we were proceeding to and I read back NARWL. At that point ATC assigned us a Descend To altitude along with a frequency change and said good day. We switched frequencies; checked in; and were cleared the remainder on the arrival and TIPP TOE Visual 28L. The query by ATC and review of the SERFR 3 Arrival made me question myself if we were actually supposed to proceed to NRRLI and no NARWL. Two very similar sounding fixes along the arrival.
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.