# SDR UPS05545062

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 7, 2005
- Submitted: August 8, 2005
- Operation: Air carrier
- Aircraft: [N409UP](https://openairdocs.org/aircraft/N409UP), registered now
- Make and model: Boeing 757-24APF
- Registry model: [Boeing 757-24APF](https://openairdocs.org/model/boeing-757-24apf) (OpenAirDocs)
- Aircraft serial: 23731
- System (JASC): [3510 · Crew Oxygen System](https://openairdocs.org/jasc/3510)
- Part: Oxygen Mask
- Part number: MC1025104
- Part serial: 58031
- Condition: Leaking
- Location: Cockpit
- Stage of operation: NR
- How discovered: O
- Nature of condition: N
- Precautionary procedure: G
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/UPS05545062

## Discrepancy

"A" CPTS OXYGEN MASK HARNESS "POPPED" AND STARTED LEAKING ON A CHECK TEST,  CARD 0101.  REMOVED AND REPLACED CPTS O2 MASK/REGULATOR ASSY IAW AMM 35-11-51-4.  OPS CHECK GOOD .

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