As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WHILE ACCOMPLISHING TASK CARD, DISCARD MEGAPHONE BATERIES. IT WAS WAS FOUND THAT BOTH FWD AND AFT MEGAPHONES ARE INOP AFTER BATTERIES CHANGED. VOLUME ON BOTH MEGAPHONE ARE NOT WORKING AT TIME OF TEST. REMOVED AND REPLACED BOTH FWD AND AFT MEGAPHONES AS PER AMM 25-65-51. OPS CHECK GOOD AND NO DEFECTS NOTED AT PRESENT TIME.