As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLIGHT 9988. STUCK MIC COM 1, INTERCOM TRANSMITTING OVER PA. CONSTANT TRIPPLE CHIME IN THE CABIN. REMOVED FROM SERVICE. FOUND FAULT CODE 23511002CMC C/W FIM TASK 23-51-00-810-865-A. PERFORMED OPS CHECK OF AIRBORNE AUDIO SYS IAW AMM TASK 23-51-00-710-801-A OPS CHECK FAILED FAULT PERSISTS. REPLACED #1 NIM, UPLOADED SOFTWARE AND PERFORMED OPERATIONAL TESTS, ALL CHECK GOOD A/C AND PLACARD REMAIN CAT III QUALIFIED.REPLACED #1 NIM, UPLD SOFTWARE AND PERFORMED ALL OPS CHECK PER E175 AMM TASKS 34-02-04-000-801 & 34-02-04-400-801. RETURNED TO SERVICE.