# SDR UIEA2025112001317

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: November 20, 2025
- Submitted: November 21, 2025
- Operation: Air carrier
- Aircraft: [N640GT](https://openairdocs.org/aircraft/N640GT), registered now
- Make and model: Boeing 767-3S1
- Registry model: [Boeing 767-3S1](https://openairdocs.org/model/boeing-767-3s1) (OpenAirDocs)
- Aircraft serial: 25221
- Aircraft time: 101,077 hours, 21,615 cycles
- System (JASC): [3510 · Crew Oxygen System](https://openairdocs.org/jasc/3510)
- Part: Oxygen Box
- Part number: MXP147
- Part serial: S6772
- Condition: Broken
- Location: Zone 200
- 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/UIEA2025112001317

## Discrepancy

F/O'S O2 TEST LEVER ON O2 MASK BOX BROKEN.  REMOVED & REPLACED F/O O2 MASK STOWAGE BOX IAW AMM 35-11-00/501, AND 35-11-51. OPS & LEAK CHECKED GOOD.

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