# SDR CALA2023032700900

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 27, 2023
- Submitted: March 27, 2023
- Operation: Air carrier
- Aircraft: [N833UA](https://openairdocs.org/aircraft/N833UA), registered now
- Make and model: Airbus A319-131
- Registry model: [Airbus A319-131](https://openairdocs.org/model/airbus-industrie-a319-131) (OpenAirDocs)
- Aircraft serial: 1401
- Aircraft time: 68,293 hours, 30,254 cycles
- System (JASC): [3200 · Landing Gear System](https://openairdocs.org/jasc/3200)
- Part: Switch
- Condition: Faulted
- Location: Brake Sys 1
- Stage of operation: CL
- How discovered: O
- Nature of condition: O
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/CALA2023032700900

## Discrepancy

SYS 1 FAULT DISPLAYED ON UPPER ECAM SCREEN. - BRAKES BRAKE SYS 1 FAULT 2 MINUTES AFTER T/O.BRAKE SYS 1 FAULT ON GND FIXED WITH RESET. CORRELATED FAULTS SHOWED "BRAKES A/SKID FAULT, BSCU DC SPLY 1PP, AFS BSCU AND BRK PEDAL XMTR (9GG)" TS BRAKE PEDAL XMTR REF TSM 32-42-00-810-833-A OPS CHECKED OK. XMTR 9GG WAS REPLACED ON FEB 22. TS BSCU DC SPLY 1PP REF 32-42-00-810-828-A. HAD POWER FROM CB 2GG AND GROUND BSCU WAS AREADY REPLACED. PER TSM 4C (2) REMOVED AND REPLACED 5GG SWITCH REF AWD 32-42-01. OPS CHECKED OK REF AMM 32-46-00-740-001. REMOVED PLACARDS.

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