# SDR 2003UALA00768

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 10, 2003
- Submitted: October 28, 2003
- Operation: Air carrier
- Aircraft: [N810UA](https://openairdocs.org/aircraft/N810UA), registered now
- Make and model: Airbus A319-131
- Registry model: [Airbus A319-131](https://openairdocs.org/model/airbus-industrie-a319-131) (OpenAirDocs)
- Aircraft serial: 843
- Aircraft time: 17,645 hours, 6,725 cycles
- Engine: Iae V2522A5
- System (JASC): [2131 · Cabin Pressure Controller](https://openairdocs.org/jasc/2131)
- Part: Controller
- Part number: 90221570210
- Part serial: 9958617
- Condition: Failed
- Location: Cabin Pressure
- Stage of operation: CR
- How discovered: O
- Nature of condition: J
- Precautionary procedure: B, A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/2003UALA00768

## Discrepancy

RETURN TO FIELD DUE TO A PRESSURIZATION PROBLEM.   CFDS REPORTED NO FAULTY SYSTEMS OR COMPONENTS. GROUND TESTING OF CABIN PRESSURE CONTROL, FMGC, AND ADIRS SYSTEMS REVEALED NO SYSTEM FAULTS. REPLACED CPC 2 AS PRECAUTIONARY MEASURE AS THIS WAS CPC IN CONTROL  AT TIME OF EVENT.

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