# SDR DALA2021011100173

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 8, 2021
- Submitted: January 11, 2021
- Operation: Air carrier
- Aircraft: [N504DN](https://openairdocs.org/aircraft/N504DN), registered now
- Make and model: Airbus A350-941
- Registry model: [Airbus A350-941](https://openairdocs.org/model/airbus-a350-941) (OpenAirDocs)
- Aircraft serial: 0160
- Aircraft time: 13,635 hours, 1,235 cycles
- System (JASC): [2130 · Cabin Pressure Control System](https://openairdocs.org/jasc/2130)
- Part: Warning Light
- Condition: False Activation
- Location: Cabin Pressure
- Stage of operation: IN
- How discovered: 9
- Nature of condition: N
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/DALA2021011100173

## Discrepancy

UPON ARRIVAL AT GATE ALL DOORS HAVE PRESS FLASHING LIGHT WITH ZERO CABIN PRESSURE AND OUTFLOW VALVES OPEN.  REPEAT ITEM.  CORRECTIVE ACTION: PERFORMED CPCS BITES OF AUTOMATIC PRESSURE CONTROL AND SEMI-AUTOMATIC PRESSURE CONTROL. BOTH TESTS PASSED.  ALSO PERFORMED DSCS 1 AND DSCS 2 SYSTEM TEST, NO FAULTS.

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