# SDR P5CA2025012500002

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 25, 2025
- Submitted: January 27, 2025
- Operation: Air carrier
- Aircraft: [N777SA](https://openairdocs.org/aircraft/N777SA), registered now
- Make and model: Boeing 777FZB
- Registry model: [Boeing 777FZB](https://openairdocs.org/model/boeing-777fzb) (OpenAirDocs)
- Aircraft serial: 37989
- Aircraft time: 63,303 hours, 7,335 cycles
- System (JASC): [3510 · Crew Oxygen System](https://openairdocs.org/jasc/3510)
- Part: Microphone
- Condition: Intermittent
- Location: Oxygen Mask
- 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/P5CA2025012500002

## Discrepancy

CAPTAIN OXYGEN MASK MIC INTERMITTENT WHEN USING INTERCOM SWITCH ON AUDIO PANEL AND GLARESHIELD MIC SWITCH.(<P>REPLACED CAPTAIN'S MASK WITH FIRST OBS MASK PER AMM 35-11-18. OPS CHECK AND LEAK CHECK GOOD. OBS SEAT & ASSOCIATED EQUIPMENT PLACED ON DMI 224831 PER MEL 25-11-02-01B CAT A. R/R O2 MASK STOWAGE BOX IAW AMM 35-11-18. OPS TEST GOOD. DMI 224831 CLOSED.</P>)

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