# SDR AALA202112029323

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: November 30, 2021
- Submitted: December 2, 2021
- Operation: Air carrier
- Aircraft: [N833AW](https://openairdocs.org/aircraft/N833AW), registered now
- Make and model: Airbus A319-132
- Registry model: [Airbus A319-132](https://openairdocs.org/model/airbus-a319-132) (OpenAirDocs)
- Aircraft serial: 1844
- Aircraft time: 58,132 hours, 26,493 cycles
- System (JASC): [2130 · Cabin Pressure Control System](https://openairdocs.org/jasc/2130)
- Part: None
- Condition: None
- Stage of operation: DE
- How discovered: V
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/AALA202112029323

## Discrepancy

AIRCRAFT WAS GROUNDED: AT FL 350 #1 PACK FLOW VALVE FLUCTUATED BETWEEN LOW AT 50 O/O CAUSING CABIN TO CLIMB 100FT PER MIN AND DECLINE 150 FT PER MIN CONTINUALLY. AT THE BEGINNING OF DECENT CABIN VERT SPEED FLUCTUATED BETWEEN 100 AND 150 FT. **SUPPLEMENTAL REPORT WILL BE SUBMITTED** (OPEN)

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