# SDR DALA2025061804581

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: June 18, 2025
- Submitted: June 18, 2025
- Operation: Air carrier
- Aircraft: [N830NW](https://openairdocs.org/aircraft/N830NW), registered now
- Make and model: Airbus A330-302
- Registry model: [Airbus A330-302](https://openairdocs.org/model/airbus-a330-302) (OpenAirDocs)
- Aircraft serial: 1769
- Aircraft time: 33,493 hours, 4,204 cycles
- System (JASC): [3510 · Crew Oxygen System](https://openairdocs.org/jasc/3510)
- Part: Oxygen Mask
- Part number: 174690M7
- Part serial: 47482
- Condition: Leaking
- Location: Zone 200
- Part time: 19,016 hours, 2,316 cycles
- Stage of operation: CL
- How discovered: O
- Nature of condition: O
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/DALA2025061804581

## Discrepancy

SHIP 3330 - ATB - DUE TO CREW OXYGEN LEAK. CORRECTIVE ACTION: REPLACED F/O MASK AND 2ND OBSERVERS MASK STORAGE BOX. OK FOR SERVICE. (7069062)

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.