# SDR DALA2021040802065

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 8, 2021
- Submitted: April 8, 2021
- Operation: Air carrier
- Aircraft: [N509DN](https://openairdocs.org/aircraft/N509DN), registered now
- Make and model: Airbus A350-941
- Registry model: [Airbus A350-941](https://openairdocs.org/model/airbus-a350-941) (OpenAirDocs)
- Aircraft serial: 0199
- Aircraft time: 13,165 hours, 1,199 cycles
- System (JASC): [3520 · Passenger Oxygen System](https://openairdocs.org/jasc/3520)
- Part: Oxygen Mask
- Condition: Unwanted Deploy
- Location: Row 22def
- Stage of operation: IN
- How discovered: 9
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/DALA2021040802065

## Discrepancy

SHIP 3509 O2 MASK ROWS 22 DEF ARE DOWN. CORRECTIVE ACTION: RESTOWED O2 MASK AND CHKD NORMAL. (7453923)

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