# SDR UIEA2019111205878

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: November 10, 2019
- Submitted: November 12, 2019
- Operation: Air carrier
- Aircraft: [N1361A](https://openairdocs.org/aircraft/N1361A), registered now
- Make and model: Boeing 767-31B
- Registry model: [Boeing 767-31B](https://openairdocs.org/model/boeing-767-31b) (OpenAirDocs)
- Aircraft serial: 26265
- Aircraft time: 90,558 hours, 19,715 cycles
- System (JASC): [3510 · Crew Oxygen System](https://openairdocs.org/jasc/3510)
- Part: Oxygen Mask
- Part number: MC1008109
- Part serial: SE63145
- Condition: Inoperative
- Location: Captain'S
- Stage of operation: IN
- How discovered: 9
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/UIEA2019111205878

## Discrepancy

CAPTAIN'S OXYGEN MASK DOES NOT STOP FLOW OF OXYGEN WHEN IN USE.(<P>SWAPPED LEFT SUPERNUMERARY SEAT MASK (OFF PART: P/N MC10-08-114, S/N B119143) WITH CAPTAIN MASK (OFF PART: P/N MC10-08-109, S/N SE63145) IAW B767 AMM 35-11-51. TRANSFERRED LEFT SUPERNUMERARY SEAT TO MDDR 120447 PER DDG 25-25-03, CAT 'D', DUE: 09-MAR-2020.</P><P>LP 1229251 - M2: SUPERNUMERARY LEFT SEAT OXYGEN MASK HAS BEEN REMOVED AND REPLACED IAW B767 -300 AMM 35-11-51. OPS CHECK OK, NO DEFECTS FOUND AT THIS TIME. THIS CLEARS MDDR 120447. PLACARDS REMOVED AND MCC NOTIFIED. </P>)

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