# SDR FDEA2018080321912

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 2, 2018
- Submitted: August 10, 2018
- Operation: Air carrier
- Aircraft: [N146FE](https://openairdocs.org/aircraft/N146FE), registered now
- Make and model: Boeing 767-3S2F
- Registry model: [Boeing 767-3S2F](https://openairdocs.org/model/boeing-767-3s2f) (OpenAirDocs)
- Aircraft serial: 43551
- Aircraft time: 2,217 hours, 939 cycles
- System (JASC): [3510 · Crew Oxygen System](https://openairdocs.org/jasc/3510)
- Part: Oxygen Mask
- Part number: MF20004
- Part serial: B119207
- Condition: Inoperative
- Location: Cockpit
- Stage of operation: IN
- How discovered: C
- Nature of condition: L
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/FDEA2018080321912

## Discrepancy

ON PREFLIGHT-FIRST OFFICER MIC TEST ON 02 MASK NOT WORKING.  REMOVED AND REPLACED F/O'S FULL FACE MASK PER M/M  35-11-51-2.  OK FOR SERVICE.

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