# SDR UIEA2021090801987

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 7, 2021
- Submitted: September 9, 2021
- Operation: Air carrier
- Aircraft: [N1409A](https://openairdocs.org/aircraft/N1409A), registered now
- Make and model: Boeing 767306
- Aircraft serial: 27960
- System (JASC): [3510 · Crew Oxygen System](https://openairdocs.org/jasc/3510)
- Part: Oxygen System
- Condition: Malfunctioned
- Location: Crew
- Stage of operation: NR
- How discovered: O
- Nature of condition: N
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/UIEA2021090801987

## Discrepancy

CREW O2 INDICATION INOP.(<P>TRANSFERRED TO MDDR 153132 IAW MEL 35-11-02-01, CAT B.</P> / <P>REMOVED AND REPLACED AVERAGING UNIT IAW AMM 35-11-06. THIS CLEARS MDDR 153132.</P>)

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