# SDR CALA2026041615417

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 14, 2026
- Submitted: April 16, 2026
- Operation: Air carrier
- Aircraft: [N829UA](https://openairdocs.org/aircraft/N829UA), registered now
- Make and model: Airbus A319-131
- Registry model: [Airbus A319-131](https://openairdocs.org/model/airbus-industrie-a319-131) (OpenAirDocs)
- Aircraft serial: 1211
- Aircraft time: 77,382 hours, 34,338 cycles
- System (JASC): [3297 · Landing Gear System Wiring](https://openairdocs.org/jasc/3297)
- Part: Wire
- Condition: Broken
- Location: Elec Connector
- Stage of operation: CL
- How discovered: O
- Nature of condition: J
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/CALA2026041615417

## Discrepancy

BRAKES AUTO BRK FAULT DISPLAYED DURING CLIMB. ASSOCIATED CFDS MESSAGE TACHOMETER4(22GG)/ BSCU(10GG). LOCKING LOG PAGE. MAINTENANCE TECHNICIAN TO DISCUSS FINDINGS WITH MAINTENANCE CONTROLLER BEFORE CLEARING THIS ITEM. TACHOMETER FAULT IS NON DEFERRABLE. PERFORMED BITE TEST ON BSCU 1(2). TACHOMETER 4 FAULTED. RECOMMEND REPLACEMENT ADD EMP:U410825 UNLOCKING FOR SIGN OFF REMOVED AND REPLACED #4 TACHOMETER REF AMM 32-42-57. DURING R&R FOUND CONNECTOR 22GG BLUE WIRE BROKEN OFF AT SOCKET PIN C. INSTALLED NEW SOCKET ON BLUE WIRE PIN C FOR CONNECTOR REF ESPM 20-48-20. OPS CHECK NORMAL. FUNCTIONAL CHECK GOOD. BITE TEST PASSED, NO FAULTS. MESSAGE NO LONGER SHOWS.

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