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An A320 captain experienced auto brake failure on touch down. The system subsequently switched automatically to the alternate brake system.
| Attributes | |
| ACN | 935469 |
| Time | |
| Date | 201102 |
| Local Time Of Day | 1801-2400 |
| Place | |
| Locale Reference | ZZZ.Airport |
| State Reference | US |
| Aircraft 1 | |
| Make Model Name | A320 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | Landing |
| Flight Plan | IFR |
| Component | |
| Aircraft Component | Normal Brake System |
| Person 1 | |
| Function | Pilot Not Flying Captain |
| Qualification | Flight Crew Air Transport Pilot (ATP) |
| Experience | Flight Crew Last 90 Days 190 Flight Crew Total 12900 Flight Crew Type 4380 |
| Events | |
| Anomaly | Aircraft Equipment Problem Critical |
Narrative:
For almost six years on the airbus; the only time I have used alternate brakes has been in the simulator. Now I have used them twice this month! The first was caused by a no. 1 tachometer and bscu (2) failure and [that] caused wheels one and three to lock upon touchdown. Autobrakes were not selected but shortly after landing we received ecams for an autobrake failure then for a bscu failure. On this second occurrence; my first officer selected autobrakes to med for strong crosswinds. Shortly after landing he advised we were not getting braking and manually applied the brakes. There was no ECAM but the gear page showed automatic brakes in amber and alt brakes in green. Although alternate brakes did have a different feel; there was no problem controlling or stopping the aircraft. (Although it would be more exciting in sna!) when I called in the gripe to maintenance; he said he was working another similar airbus brake problem.
Original NASA ASRS Text
Title: An A320 Captain experienced auto brake failure on touch down. The system subsequently switched automatically to the alternate brake system.
Narrative: For almost six years on the Airbus; the only time I have used alternate brakes has been in the simulator. Now I have used them twice this month! The first was caused by a No. 1 tachometer and BSCU (2) failure and [that] caused wheels one and three to lock upon touchdown. Autobrakes were not selected but shortly after landing we received ECAMS for an autobrake failure then for a BSCU failure. On this second occurrence; my First Officer selected autobrakes to MED for strong crosswinds. Shortly after landing he advised we were not getting braking and manually applied the brakes. There was no ECAM but the gear page showed AUTO BRAKES in amber and Alt Brakes in green. Although alternate brakes did have a different feel; there was no problem controlling or stopping the aircraft. (Although it would be more exciting in SNA!) When I called in the gripe to Maintenance; he said he was working another similar Airbus brake problem.
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.