# SDR CALA2026030214153

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 26, 2026
- Submitted: March 2, 2026
- Operation: Air carrier
- Aircraft: [N836UA](https://openairdocs.org/aircraft/N836UA), registered now
- Make and model: Airbus A319-131
- Registry model: [Airbus A319-131](https://openairdocs.org/model/airbus-industrie-a319-131) (OpenAirDocs)
- Aircraft serial: 1460
- Aircraft time: 74,290 hours, 33,397 cycles
- System (JASC): [2150 · Cabin Cooling System](https://openairdocs.org/jasc/2150)
- Part: Acm
- Part number: 1263A00003
- Part serial: 02304
- Condition: Faulted
- Location: Left
- Part time: 770,085 hours, 731,291 cycles
- Stage of operation: AP
- 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/CALA2026030214153

## Discrepancy

A/C PACK NR 1 OVHT. PACK OUTLET TEMP GOT AS HIGH  AS 136 DEGREES.   WITH THE PACK SELECTED ON & THE FCV SHOWING OPEN, THE ACM DOES NOT APPEAR TO BE RUNNING. SUSPECT THE ACM FAILED. PACK 1 SWITCH SELECTED OFF,  VERIFIED THE FCV IS CLOSED ON THE BLEED PAGE, AND COND ZONE REGULATOR FAULT CAUTION IS NOT DISPLAYED.  INSTALLED INOPERATIVE STICKER ADJACENT TO A/C PACK 1 SWITCH.  USING THE APU BLEED AIR, PACK 1 FLOW CONTROL VALVE OPEN ON ECAM, BUT THE FLOW NEEDLE STAYS AT LOW, THE ACM DID NOT RUN, NO SOUND . REVERESED MEL AND AIRCRAFT RETURN TO THE NORMAL CONDITION.

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