# SDR AALA2019062099027

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: June 18, 2019
- Submitted: June 20, 2019
- Operation: Air carrier
- Aircraft: [N925UY](https://openairdocs.org/aircraft/N925UY), registered now
- Make and model: Airbus A321-231
- Registry model: [Airbus A321-231](https://openairdocs.org/model/airbus-a321-231) (OpenAirDocs)
- Aircraft serial: 6613
- Aircraft time: 14,624 hours, 5,592 cycles
- System (JASC): [2150 · Cabin Cooling System](https://openairdocs.org/jasc/2150)
- Part: Acm
- Part number: 1263A000003
- Part serial: 1594
- Condition: Failed
- Location: Nr 1
- Part time: 14,624 hours, 5,592 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/AALA2019062099027

## Discrepancy

AIRCRAFT WAS GROUNDED: PILOT RETURNED TO PHX ON ACCOUNT OF PRESSURIZATION ISSUES. ACFT WOULD NOT PRESSURIZE, AFTER TO, RECYCLED #1 PACK #1 BLEED, NO HELP. MAINTENANCE FOUND #1 PACK AIR CYCLE MACHINE NOT WORKING PROPERLY. REMOVED AND REPLACED #1 PACK ACM IAW AMM 21-52-21 PB 401. OPS CHECK GOOD.

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