 |
37000 Feet | Browse and search NASA's Aviation Safety Reporting System |
|
A320 flight crew reported FMC issues resulted in an unstabilized approach and low altitude alert in visual conditions.
| Attributes | |
| ACN | 1582185 |
| Time | |
| Date | 201809 |
| Local Time Of Day | 1201-1800 |
| Place | |
| Locale Reference | ZZZ.Airport |
| State Reference | US |
| Environment | |
| Flight Conditions | VMC |
| Aircraft 1 | |
| Make Model Name | A320 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | Descent |
| Route In Use | STAR ZZZZZ |
| Flight Plan | IFR |
| Component | |
| Aircraft Component | FMS/FMC |
| Person 1 | |
| Function | Captain Pilot Flying |
| Qualification | Flight Crew Air Transport Pilot (ATP) |
| Experience | Flight Crew Last 90 Days 200 Flight Crew Total 26000 Flight Crew Type 15000 |
| Person 2 | |
| Function | Pilot Not Flying First Officer |
| Qualification | Flight Crew Air Transport Pilot (ATP) |
| Events | |
| Anomaly | Aircraft Equipment Problem Less Severe Deviation - Procedural Clearance Deviation - Track / Heading All Types Inflight Event / Encounter CFTT / CFIT |
Narrative:
Cleared and descending via [the arrival] landing north. Approaching turn [the] aircraft was tracking lateral course normally. Pre extended final approach and noticed route dropping out of FMS. Selected a parallel heading for the downwind while rebuilding arrival. After; engaged auto flight to intercept track for the downwind. Instead of a normal intercept; auto flight commanded at least a 60 degree intercept. While flying through published track and starting a correction; ATC queried. While attempting to become established on downwind track; ATC called out an altitude alert. We advised we were having issues with the FMS and were in VMC conditions with terrain in sight below us. ATC directed a heading eventually to base. All recovery actions were accomplished in VMC. Airport visually acquired and final approach and landing accomplished.
Original NASA ASRS Text
Title: A320 flight crew reported FMC issues resulted in an unstabilized approach and low altitude alert in visual conditions.
Narrative: Cleared and descending via [the arrival] landing north. Approaching turn [the] aircraft was tracking lateral course normally. Pre extended final approach and noticed route dropping out of FMS. Selected a parallel heading for the downwind while rebuilding arrival. After; engaged auto flight to intercept track for the downwind. Instead of a normal intercept; auto flight commanded at least a 60 degree intercept. While flying through published track and starting a correction; ATC queried. While attempting to become established on downwind track; ATC called out an altitude alert. We advised we were having issues with the FMS and were in VMC conditions with terrain in sight below us. ATC directed a heading eventually to base. All recovery actions were accomplished in VMC. Airport visually acquired and final approach and landing accomplished.
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.