# SDR AALA202506023444

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 31, 2025
- Submitted: June 2, 2025
- Operation: Air carrier
- Aircraft: [N190UW](https://openairdocs.org/aircraft/N190UW), registered now
- Make and model: Airbus A321-211
- Registry model: [Airbus A321-211](https://openairdocs.org/model/airbus-a321-211) (OpenAirDocs)
- Aircraft serial: 1436
- Aircraft time: 75,693 hours, 29,541 cycles
- System (JASC): [3510 · Crew Oxygen System](https://openairdocs.org/jasc/3510)
- Part: Oxygen Bottle
- Part number: 89151114
- Part serial: ST353621
- Condition: Low Pressure
- Location: Zone 100
- Part time: 3,791 hours, 2,107 cycles
- Stage of operation: CR
- How discovered: V
- Nature of condition: J
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/AALA202506023444

## Discrepancy

AIRCRAFT WAS GROUNDED: AN EMERGENCY WAS DECLARED AND THE AIRCRAFT DIVERTED TO DFW DUE TO THE FLIGHT CREW REPORTING THAT THE FLIGHT DECK OXYGEN PSI WAS 440 WITH A TEMPERATURE OF 54. THE AIRCRAFT LANDED SAFELY AT DFW WITHOUT FURTHER INCIDENT, MAINTENANCE REPLACED THE FLIGHT CREW O2 BOTTLE AND ACCOMPLISHED A SATISFACTORY LEAK / OPERASTIONAL CHECK PER AMM 35-11-41.

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