# SDR UIEA2020102202285

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 21, 2020
- Submitted: October 23, 2020
- Operation: Air carrier
- Aircraft: [N1321A](https://openairdocs.org/aircraft/N1321A), registered now
- Make and model: Boeing 767306
- Aircraft serial: 27957
- Aircraft time: 87,337 hours, 20,872 cycles
- System (JASC): [3510 · Crew Oxygen System](https://openairdocs.org/jasc/3510)
- Part: Oxygen Mask
- Part number: MC1008114
- Part serial: B116474
- Condition: No Test
- Location: First Officer'S
- 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/UIEA2020102202285

## Discrepancy

F/O MASK FAILED THE PREFLIGHT TEST.  SWAPPED F/O'S CREW O2 MASK WITH RT SUPER NUMERARY OBSERVER POSITION.  PLACED ON MEL 35-11-02-03A.  TRANSFERED TO MDDR 136525.  T.J. 12:25 22OCT20.  R & R RT SUPERNUMERARY OXYGEN MASK, IAW AMM 35-11-51.  OPERATIONS CHECK GOOD.  THIS CLEARS DMI 136525.  MCC NOTIFIED, PLACARDS REMOVED.  WO 72350 C/W DISPATCH: DP@1504Z.

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