# SDR UIEA2020041000731

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 10, 2020
- Submitted: April 14, 2020
- Operation: Air carrier
- Aircraft: [N1373A](https://openairdocs.org/aircraft/N1373A), registered now
- Make and model: Boeing 767-31K
- Registry model: [Boeing 767-31K](https://openairdocs.org/model/boeing-767-31k) (OpenAirDocs)
- Aircraft serial: 27205
- Aircraft time: 101,401 hours, 21,286 cycles
- System (JASC): [3510 · Crew Oxygen System](https://openairdocs.org/jasc/3510)
- Part: Oxygen Mask
- Part number: MC1008109
- Part serial: 97098
- Condition: Inoperative
- Location: Cockpit
- Stage of operation: IN
- How discovered: C
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/UIEA2020041000731

## Discrepancy

OBSERVER SEAT O2 MASK INOP.(<P>TRANSFERRED TO MDDR #126877 I.A.W MEL 25-11-02-01A CAT A.</P><P>REF LOG PAGE 1150231: REMOVED AND REPLACED OBSERVER O2 MASK IAW AMM 35-11-51. OPS CHECK GOOD. THIS CLEARS MDDR 126877. PLACARD REMOVED.</P>)

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