# SDR USAA2015010200004

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 31, 2014
- Submitted: January 29, 2015
- Operation: Air carrier
- Aircraft: [N654AW](https://openairdocs.org/aircraft/N654AW), registered now
- Make and model: Airbus A320-232
- Registry model: [Airbus A320-232](https://openairdocs.org/model/airbus-a320-232) (OpenAirDocs)
- Aircraft serial: 1050
- Aircraft time: 56,380 hours, 20,626 cycles
- System (JASC): [2150 · Cabin Cooling System](https://openairdocs.org/jasc/2150)
- Part: A/C Pack
- Condition: Malfunctioned
- Location: Ac Bay
- Stage of operation: CR
- How discovered: O
- Nature of condition: O
- Precautionary procedure: H
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/USAA2015010200004

## Discrepancy

PACK 1 TURNED OFF IN CRUISE AT FL 340 DUE TO RAPID FLUCTUATIONS IN PSI 12 - 42.  PSI CAUSING RAPID CHANGES IN CABIN VERTICAL SPEED & EAR DISCOMFORT FOR PAXS.  NO FAULTS WERE FOUND AND NO FURTHER OCCURANCES.

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