What was found
PILOT REPORTED THAT THE FLIGHT ATTENDANT INTERPHONE SYS DOES NOT WORK. PERFORMED A FAULT ANALYSIS IAW FIM 44-10-00-810-801-A, FINDING THAT THE PA CIC IS NOT WORKING PROPERLY. REPLACED IAW AMM 44-11-01, PERFORMED THE CORRESPONDING OPERATIONAL TESTS WITH NORMAL RESULTS, THE ACFT WAS RETURNED TO SERVICE.