As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
SEA FLIGHT NR 2210, FIRST OFFICER TO FLIGHT ATTENDANT INTERPHONE CUTTING OUT FIRST OFFICER AUDIO CONTROL SELECT KNOB WIGGLED, FLIGHT ATTENDANT HAND MIC INTERMITTENT WHEN MIC WAS TAPPED ON. MAINTENANCE REPLACED FIRST OFFICER AUDIO CONTROL PANEL, FLIGHT ATTENDANT HAND MIC P/N 5260-1-1 SN 511 TSN 12408.7 CSN 17972 TSR 957.8) AND AMPLIFIER (P/N 5082-1-2 S/N 469, TSN 99755.4 CSN 42662). OPERATION CHECK GOOD. AIRCRAFT RETURNED TO SERVICE.