What was found
FO'S O2 MASK MIC DOES NOT WORK. SUSPECT DAMAGE DUE TO PRE FLIGHT CHECKS. REPLACED ASSEMBLY, CHECKS OK. AC OK FOR SERVICE.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
FO'S O2 MASK MIC DOES NOT WORK. SUSPECT DAMAGE DUE TO PRE FLIGHT CHECKS. REPLACED ASSEMBLY, CHECKS OK. AC OK FOR SERVICE.