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An A319 captain reported a FMGC with thales software aggressively captured a localizer after gently approaching the intercept track.
| Attributes | |
| ACN | 968441 |
| Time | |
| Date | 201109 |
| Local Time Of Day | 1201-1800 |
| Place | |
| Locale Reference | ZZZ.ARTCC |
| State Reference | US |
| Environment | |
| Light | Daylight |
| Aircraft 1 | |
| Make Model Name | A319 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | Initial Approach |
| Flight Plan | IFR |
| Component | |
| Aircraft Component | FMS/FMC |
| Person 1 | |
| Function | Captain |
| Qualification | Flight Crew Air Transport Pilot (ATP) |
| Events | |
| Anomaly | Aircraft Equipment Problem Less Severe |
Narrative:
Localizer was armed and intercepted and FMA displayed localizer .5 miles to right of localizer (full-scale loc deflection at about 16 miles out). Then when it drifted over and got on center line; the aircraft jerked and rolled left to finalize a localizer interception - unnecessarily jerky and excessive; especially given the lazy way it over-anticipated the localizer intercept. Terrible stuff from thales. Thales needs to be told by airbus to fix this box; or we need to get honeywell.
Original NASA ASRS Text
Title: An A319 Captain reported a FMGC with Thales software aggressively captured a localizer after gently approaching the intercept track.
Narrative: Localizer was armed and intercepted and FMA displayed LOC .5 miles to R of localizer (full-scale Loc deflection at about 16 miles out). Then when it drifted over and got on center line; the aircraft jerked and rolled left to finalize a LOC interception - unnecessarily jerky and excessive; especially given the lazy way it over-anticipated the LOC intercept. Terrible stuff from Thales. Thales needs to be told by Airbus to fix this box; or we need to get Honeywell.
Data retrieved from NASA's ASRS site as of April 2012 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.