# SDR REXA2026050400449

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 26, 2026
- Submitted: May 4, 2026
- Operation: Air carrier
- Aircraft: [N478PX](https://openairdocs.org/aircraft/N478PX), registered now
- Make and model: Cndair CL6002D24
- Aircraft serial: 15478
- Aircraft time: 12,903 hours, 10,208 cycles
- System (JASC): [2150 · Cabin Cooling System](https://openairdocs.org/jasc/2150)
- Part: Acm
- Part number: GG670950097
- Condition: Inoperative
- Location: Zone 100
- Stage of operation: CR
- How discovered: O
- Nature of condition: B
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/REXA2026050400449

## Discrepancy

RIGHT PACK AUTOFAIL ON EICAS FOLLOWED BY SMOKE NEAR THE EXIT ROW.   DEFERRING R PACK IAW CR9 MEL 21-51-1A PLACARD INSTALLED, MM02 UPDATED, MOC NOTIFIED #106409 MX PROCEDURES COMPLIED WITH. B1 #211943.  REMOVED AND REPLACED R PACK TEMP CONTROL VALVE IAW AMM 21-51-20. NO FIX. SUSPECT ACM . ITEM REMAINS DEFERRED.(CVG 97329).  R & R RT ACM IAW JOBCARD 900-21-310-902. OPS CHECK AND LEAK CHECK GOOD. MMO2 UPDATED, PLACARD REMOVED, MX PROCEDURES RESTORED.

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