# SDR CALA2023042401237

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 24, 2023
- Submitted: April 24, 2023
- Operation: Air carrier
- Aircraft: [N825UA](https://openairdocs.org/aircraft/N825UA), registered now
- Make and model: Airbus A319-131
- Registry model: [Airbus A319-131](https://openairdocs.org/model/airbus-industrie-a319-131) (OpenAirDocs)
- Aircraft serial: 980
- Aircraft time: 75,148 hours, 32,267 cycles
- System (JASC): [2160 · Cabin Temperature Control System](https://openairdocs.org/jasc/2160)
- Part: Bypass Valve
- Part number: 1312A000001
- Part serial: 1312A00L1000171
- Condition: Failed
- Location: Pack 2
- Part time: 767,535 hours, 728,774 cycles
- Stage of operation: CL
- How discovered: O
- Nature of condition: J
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/CALA2023042401237

## Discrepancy

AIR PACK 2 REG FAULT...FLIGHT DECK TEMP UNCONTROLLABLE...AT 84 DEGREES AND CLIMBING. POST FLIGHT REPORT INFO REMOVED RIGHT PACK PANEL 192FB FOR TROUBLESHOOTING ACCESS. REPLACED PACK 2 TURBINE BYPASS VALVE (30HH) REF AMM 21-63-00-720-001-A. VERIFIED ALL ZONE TEMPS DRIVE HOT AND COLD :1 21-61-53/401. OPS AND LEAK CHECKS GOOD. PERFORMED OPERATIONAL AS REQUIRED. RE-INSTALLED PANEL 192KB REF AMM.   FUNCTIONAL TEST OF THE COCKPIT AND CABIN TEMP CONTROL REF AMM.

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