# SDR CALA2026072818070

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 26, 2026
- Submitted: July 29, 2026
- Operation: Air carrier
- Aircraft: [N494UA](https://openairdocs.org/aircraft/N494UA), registered now
- Make and model: Airbus A320-232
- Registry model: [Airbus A320-232](https://openairdocs.org/model/airbus-a320-232) (OpenAirDocs)
- Aircraft serial: 1840
- Aircraft time: 70,167 hours, 31,324 cycles
- System (JASC): [2150 · Cabin Cooling System](https://openairdocs.org/jasc/2150)
- Part: Acm
- Part number: 756A00005
- Part serial: 1731
- Condition: Faulted
- Location: Left
- Part time: 74,995 hours, 32,884 cycles
- Stage of operation: CR
- How discovered: 9
- Nature of condition: B
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/CALA2026072818070

## Discrepancy

AIRCRAFT TOO HOTCONTACT TOMC 847-700-9980 POSITIVE FIX REQUIRED.  ECAM SD INDICATION PIC MX FOLLOWING TSM 21-63-00-810-846-A.    PRECAUTIONARY PERF TEMP CTL BITE NO DEFECTS NOTED REF AMM 21-63-00 , ALL GASPERS IN FLIGHT DECK & FWD CABIN BLOW COLD AIR & HAVE SUFFICIENT AIR PRESS, CLEANED CABIN TEMP SENSOR FILTERS NO CHANGE IN OUTLET TEMP FOR FWD CABIN AND FLIGHT DECK REF MX TIP 21-15, PER TECH SUPPORT RECOMMEND DETAIL INSPECTION OF BELLOWS ON PACK 1 REF TSM 21-63-00-810-846A, ALL GASPER BLOWING COLD WITH EXCEPTION OF AFT GALLEY GASPER ABOVE COFFEMAKER, NO AIR LEAK NOTED AROUND PC AIR PANEL. DURING GVI OF CLAMPS, DUCTING, AND BELLOWS BETWEEN PACK OUTLET AND MIXER FOUND RT OULET MIXER DUCT DAMAGED IAW AMM 21-52-00-210-802-A. OUTLET MIXER DUCT M&E PN 31-2121-3-0029.   REPLACED RT OULET MIXER DUCT BETWEEN PACK OUTLET & MIXER IAW 21-21-00-210-804-A. NO HELP. COCKPIT, FWD GALLEY, & AFT GALLEY REMAIN HOT. REF TSM 21-63-00-810-855-A0 REPLACED FLIGHT DECK TRIM VALVE IAW AMM 21-63-51-000-001 & VALVE,  R & R NR 1 PACK AIR CYCLE MACHINE IAW AMM 21-52-21/401.

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