# SDR WX0600012

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 14, 2006
- Submitted: February 16, 2006
- Operation: Air carrier
- Aircraft: [N865GA](https://openairdocs.org/aircraft/N865GA), registered now
- Make and model: Doug DC-9-83
- Registry model: [Doug DC-9-83](https://openairdocs.org/model/douglas-dc-9-83) (OpenAirDocs)
- Aircraft serial: 49998
- System (JASC): [3510 · Crew Oxygen System](https://openairdocs.org/jasc/3510)
- Part: Control Box
- Part number: 11894522
- Part serial: 001236
- Condition: Malfunctioned
- Location: O2 Mask
- 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/WX0600012

## Discrepancy

LAS - DLH - CREW REPORTED THE FIRST OFFICERS TRANSMITTER INOPERATIVE ON ANY MIC.  AIRCRAFT RETURNED TO LAS AND LANDED WITHOUT INCIDENT.  MAINTENANCE FOUND THE FIRST OFFICERS OXYGEN MASK SYSTEM CAUSING DISTORTION IN THE FIRST OFFICERS COMM.  REMOVED AND REPLACED FIRST OFFICERS OXYGEN MASK BOX ASSEMBLY IAW MM 35-10-04.  COMM OPERATIONALLY CHECKS NORMAL.  AIRCRAFT RETURNED TO SERVICE.

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