# SDR EIAA2011036

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 10, 2011
- Submitted: April 13, 2011
- Operation: Air carrier
- Aircraft: N486EV
- Make and model: Boeing 747 212B
- Registry model: [Boeing 747 212B](https://openairdocs.org/model/boeing-747-212b) (OpenAirDocs)
- Aircraft serial: 20888
- Aircraft time: 98,715 hours, 23,021 cycles
- System (JASC): [3510 · Crew Oxygen System](https://openairdocs.org/jasc/3510)
- Part: Transducer
- Part number: 831SG25020R
- Part serial: 44831
- Condition: Broken
- Location: Crew O2
- Stage of operation: CR
- How discovered: O
- Nature of condition: O
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/EIAA2011036

## Discrepancy

AT FL 330 CREW NOTICED OXYGEN QTY DEPLETED.  FOUND LOWER O2 TRANSDUCER BROKEN.  SWAPPED 2 PAX O2 BOTTLES TO CREW POSITION, REF MM 12-15-08.  LEAK CHECK PERFORMED NO LEAKS, ALSO SWAPPED LWR TRANSDUCER TO PAX FWD POSITION REF MM 35-11-03.  PLACED PAX O2 SYSTEM ON DMI 368 PER MEL 35-1-3.

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