# SDR UPS04543595

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 8, 2004
- Submitted: December 10, 2004
- Operation: Air carrier
- Aircraft: [N414UP](https://openairdocs.org/aircraft/N414UP), registered now
- Make and model: Boeing 757-24APF
- Registry model: [Boeing 757-24APF](https://openairdocs.org/model/boeing-757-24apf) (OpenAirDocs)
- Aircraft serial: 23854
- System (JASC): [3520 · Passenger Oxygen System](https://openairdocs.org/jasc/3520)
- Part: Oxygen Mask
- Condition: Inoperative
- Location: F/O Cockpit
- 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/UPS04543595

## Discrepancy

PILOT REPORT - FIRST OFFICERS 02 MASK INOP.  REPLACED FIRST OFFICERS 02 BOX AND MASK WITH FIRST OBSERVERS 02 BOX AND MASK ASSY IAW MM REF 35-11-51-4.  FIRST OFFICERS 02 MASK, NOW OK FOR SERVICE.

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