# SDR AALA202201031135

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 30, 2021
- Submitted: January 3, 2022
- Operation: Air carrier
- Aircraft: [N747UW](https://openairdocs.org/aircraft/N747UW), registered now
- Make and model: Airbus A319-112
- Registry model: [Airbus A319-112](https://openairdocs.org/model/airbus-industrie-a319-112) (OpenAirDocs)
- Aircraft serial: 1301
- Aircraft time: 54,712 hours, 34,562 cycles
- System (JASC): [2130 · Cabin Pressure Control System](https://openairdocs.org/jasc/2130)
- Part: Controller
- Condition: Fault Message
- Location: Zone 100 - Fuse
- Stage of operation: DE
- How discovered: V
- Nature of condition: J
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/AALA202201031135

## Discrepancy

CABIN DEPRESSURIZED DURING DESCENT. SAFETY VALVES OPEN AMBER INDICATION ON CABIN PRESSURE PAGE. OUTFLOW VALVE AND SAFETY VALVE BOTH FULLY OPEN AT 6000'. MAINTENANCE: PERFORMED BIT TEST CHECKS OF BOTH CABIN PRESSURE CONTROLLERS PER AMM 21-31-00 AND NO FAULTS NOTED.

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