# SDR CALA2026052016423

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 18, 2026
- Submitted: May 20, 2026
- Operation: Air carrier
- Aircraft: [N854UA](https://openairdocs.org/aircraft/N854UA), registered now
- Make and model: Airbus A319-131
- Registry model: [Airbus A319-131](https://openairdocs.org/model/airbus-industrie-a319-131) (OpenAirDocs)
- Aircraft serial: 1731
- Aircraft time: 72,254 hours, 32,543 cycles
- System (JASC): [2160 · Cabin Temperature Control System](https://openairdocs.org/jasc/2160)
- Part: Controller
- Part number: 775D000001
- Part serial: 565
- Condition: Faulted
- Location: Zone 100
- Part time: 18,026 hours, 8,423 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/CALA2026052016423

## Discrepancy

COND ZONE REGUL FAULT EC AM ON CLB. TEMP CLBED AN D MAINTANED AB OVE  90F UNTIL DESCENT T/S PER TSM  TASK 21-63-00-810-827-A  & R/R ZONE TEMP CNTRL. PER AMM 21-83-34-400-001-A. OPS CHECK PASS OPS CHK TEMP CONTROL SYS PER AMM 21-63-00-710-004-A.  NO FAULTS FOUND. RAN APU AND PACKS TEMP STAYED COLD.

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