What was found
OVERWING CROSS AISLE INTERPHONE CANNOT CALL AFT CABIN. REPLACED MID HANDSET (P/N 285N0412-3 - POSITION 3) AND AUDIO ACCESSORY UNIT, SYSTEM CHECKS NORMAL WHILE AT THE GATE.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
OVERWING CROSS AISLE INTERPHONE CANNOT CALL AFT CABIN. REPLACED MID HANDSET (P/N 285N0412-3 - POSITION 3) AND AUDIO ACCESSORY UNIT, SYSTEM CHECKS NORMAL WHILE AT THE GATE.