What was found
CREW REPORT: F/O O2 MASK IS INTERMITTENT. NO SOUND THROUGH SPEAKER. INTERMITTENT SHORT IN MIC. REPLACED MASK ASSY.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
CREW REPORT: F/O O2 MASK IS INTERMITTENT. NO SOUND THROUGH SPEAKER. INTERMITTENT SHORT IN MIC. REPLACED MASK ASSY.