# SDR AALA202204058333

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 4, 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: 60,094 hours, 34,630 cycles
- System (JASC): [2131 · Cabin Pressure Controller](https://openairdocs.org/jasc/2131)
- Part: Controller
- Part number: 90221570210
- Part serial: 9831786
- Condition: Unserviceable
- Location: Zone 100 - Fuse
- Part time: 59,550 hours, 34,197 cycles
- Stage of operation: CL
- How discovered: V
- Nature of condition: J
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/AALA202204058333

## Discrepancy

AIRCRAFT WAS GROUNDED: ON CLIMB OUT AT 14,000 FEET AIRCRAFT PRESSURE FLUCTUATES UNCONTROLLABLY. FLIGHT RETURNED TO CLT LANDING SAFELY. REPLACED CABIN PRESSURE CONTROLLER #1 (AALA202204058333) AND CABIN PRESSURE CONTROLLER #2 (AALA202204053319) PER AMM 21-31-34. REPLACED SYSTEM DATA ACQUISITION CONCENTRATOR (SDAC) #2 (AALA202204052554) PER AMM 31-55-34. ACCOMPLISHED SATISFACTORY OPERATIONAL CHECK.

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