# SDR CALA2026030214202

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 28, 2026
- Submitted: March 2, 2026
- Operation: Air carrier
- Aircraft: [N837UA](https://openairdocs.org/aircraft/N837UA), registered now
- Make and model: Airbus A319-131
- Registry model: [Airbus A319-131](https://openairdocs.org/model/airbus-industrie-a319-131) (OpenAirDocs)
- Aircraft serial: 1474
- Aircraft time: 70,832 hours, 31,861 cycles
- System (JASC): [2920 · Hydraulic System, Auxiliary](https://openairdocs.org/jasc/2920)
- Part: Pressure Switch
- Part number: 1211523239
- Condition: Damaged
- Location: Rat
- Stage of operation: IN
- How discovered: O
- Nature of condition: J
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/CALA2026030214202

## Discrepancy

AFTER RAT FAN BLADE INSPECTION RED LIGHT ACTUATOR PRESSURE LGHT IS ILLUMINATED ON RAT CONTROL MODULE AFTER STOWING RAT ALSO RAT FAULT DISPLAYED ON UPPER ECAM WITH AMBER TRIANGLE DISPLAYED ON HYDRAULICS PAGE. REPLACED RAT ACTUATOR PRESURE SWITCH, LEAK CK OK OPS CK OK REF TSM 29-22-00-810-801-A, AMM 29-22-53-000-013-A, 29-22-53-400-013-A.

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