# SDR AALA202204051539

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 2, 2022
- Submitted: April 5, 2022
- Operation: Air carrier
- Aircraft: [N110UW](https://openairdocs.org/aircraft/N110UW), registered now
- Make and model: Airbus A320-214
- Registry model: [Airbus A320-214](https://openairdocs.org/model/airbus-a320-214) (OpenAirDocs)
- Aircraft serial: 1112
- Aircraft time: 60,093 hours, 34,629 cycles
- System (JASC): [2130 · Cabin Pressure Control System](https://openairdocs.org/jasc/2130)
- Part: Sdac
- Part number: 350E5500202
- Part serial: 0E5005567
- Condition: Defective
- Location: Zone 100 - Fuse
- Part time: 54,316 hours, 28,757 cycles
- Stage of operation: CL
- How discovered: V
- Nature of condition: O
- Precautionary procedure: A, O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/AALA202204051539

## Discrepancy

AIRCRAFT WAS GROUNDED: 0N CLIMB OUT THE PRESSURIZATION CLIMBED AT 2800 FT/MIN ON 3 EA'50DES WE LEVELED AT 19,000 DP WAS 3.9 CABIN ALT 7950 WE CHANGED PRESSURIZATION CONTROLLER WITH NO HELP. AIRCRAFT DIVERTED CLT WHERE IT LANDED SAFELY WITHOUT FURTHER INCIDENT. NOTE: NO EMERGENCY WAS DECLARED. MAINTENANCE PERFORMED A GROUND SCAN AND FOUND THE LOSS OF ANALOG OUTPUT OF THE CABIN PRESSURE CONTROLLER #1 TO THE #1 SYSTEM DATA ACQUISITION CONCENTRATOR (SDAC). REPLACED THE #1 SYSTEM DATA ACQUISITION CONCENTRATOR (SDAC). AND ACCOMPLISHED A SATISFACTORY OPERATIONAL CHECK PER AMM 31-55-34.

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