# SDR UPS00234545

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 13, 2000
- Submitted: December 15, 2000
- Operation: Air carrier
- Aircraft: [N921UP](https://openairdocs.org/aircraft/N921UP), registered now
- Make and model: Boeing 727180C
- Aircraft serial: 19874
- System (JASC): [3510 · Crew Oxygen System](https://openairdocs.org/jasc/3510)
- Part: Switch
- Condition: Inoperative
- Location: Cockpit
- Stage of operation: IN
- How discovered: V
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/UPS00234545

## Discrepancy

INSPECTION TYPE:N/A CO PILOTS EMERG 0XYGEN SWITCH FAILS TO FULLY CLOSE ***SUPPLEMENTAL MRR***     REPLACED CO-PILOTS REGULATION W/SERVICABLE RUGULATION AND REPLACED W ITH SERVICABLE BOTTLE. LEAKED CHECK OK OPS CHECK PER 727 MM CHPT 35- 11-31 AND 12-15-11

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