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Air carrier flight crew reported the FMS produced duplicate fixes during an arrival and runway change.
| Attributes | |
| ACN | 1766480 |
| Time | |
| Date | 202010 |
| Local Time Of Day | 1201-1800 |
| Place | |
| Locale Reference | ZZZ.Airport |
| State Reference | US |
| Aircraft 1 | |
| Make Model Name | EMB ERJ 145 ER/LR |
| Operating Under FAR Part | Part 121 |
| Flight Phase | Initial Approach |
| Route In Use | Direct |
| Flight Plan | IFR |
| Component | |
| Aircraft Component | Central Computer |
| Person 1 | |
| Function | First Officer Pilot Flying |
| Qualification | Flight Crew Instrument Flight Crew Air Transport Pilot (ATP) Flight Crew Multiengine |
| Person 2 | |
| Function | Pilot Not Flying Captain |
| Qualification | Flight Crew Instrument Flight Crew Air Transport Pilot (ATP) Flight Crew Multiengine |
| Events | |
| Anomaly | Aircraft Equipment Problem Less Severe Deviation - Procedural Clearance Deviation - Track / Heading All Types |
Narrative:
It was from ZZZ1 to ZZZ IFR flight. Our flight plan and clearance was from ZZZ1..ZZZZZ5. ZZZ. On the ground; [the] captain; and I reviewed the route including every fix in the arrival and programmed [the] FMS for runway xxl in ZZZ. From takeoff until descend via zzzzz 5 arrival; flight was uneventful. Captain and I took off from runway xxl at ZZZ1 and then instructed to go direct zzzzz shortly after instructed go to direct ZZZZZ1 which is [the IAF] of [the] arrival. We were instructed to descend via ZZZZZ5 arrival in to ZZZ with both altitude and airspeed restriction as stated in the STAR. During the descend; the ZZZ approach controller gave instruction to switch our runway to xxr. Captain and I programmed [the] FMS and switched our planned runway to xxr as well as review the fixes along the route. However; as we approach the fix ZZZZZ2; LNAV autopilot was switched to lateral mode [and the] airplane was late to turn to [the] final [approach] fix which is ZZZZZ3. As soon as pilot flying noticed the mode change in autopilot; pilot flying used heading bug to make a left turn to rejoin the course for the rest of arrival. After the arrival; flight crew flew rest of flight uneventfully and land safely at runway xxr. Next time; we will review the fixes more carefully after making any changes on the runways or arrivals and make sure if there are any fixes that are duplicated; we will deleted it.
Original NASA ASRS Text
Title: Air Carrier flight crew reported the FMS produced duplicate fixes during an arrival and runway change.
Narrative: It was from ZZZ1 to ZZZ IFR flight. Our flight plan and clearance was from ZZZ1..ZZZZZ5. ZZZ. On the ground; [the] Captain; and I reviewed the route including every fix in the arrival and programmed [the] FMS for Runway XXL in ZZZ. From takeoff until descend via ZZZZZ 5 Arrival; flight was uneventful. Captain and I took off from Runway XXL at ZZZ1 and then instructed to go direct ZZZZZ shortly after instructed go to direct ZZZZZ1 which is [the IAF] of [the] arrival. We were instructed to descend via ZZZZZ5 Arrival in to ZZZ with both altitude and airspeed restriction as stated in the STAR. During the descend; the ZZZ Approach Controller gave instruction to switch our runway to XXR. Captain and I programmed [the] FMS and switched our planned runway to XXR as well as review the fixes along the route. However; as we approach the fix ZZZZZ2; LNAV autopilot was switched to lateral mode [and the] airplane was late to turn to [the] final [approach] fix which is ZZZZZ3. As soon as Pilot Flying noticed the mode change in autopilot; Pilot Flying used heading bug to make a left turn to rejoin the course for the rest of arrival. After the arrival; flight crew flew rest of flight uneventfully and land safely at Runway XXR. Next time; we will review the fixes more carefully after making any changes on the runways or arrivals and make sure if there are any fixes that are duplicated; we will deleted it.
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.