As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
THE ACFT WAS IN THE PROCESS OF A INSP AN A-CHECK AND THE MEGA PHONE IS ONE OF THE INSP AND IT WAS DISCOVERED THAT THE MEGA PHONE WAS WEAK FUNCTIONING AND THE BATTERY WAS REPLACED AND THE MEGA PHONE OPS CHECK WAS GOOD AND THE ACFT WILL BE PUT BACK IN SERVICE FOLLOWING THE COMPLETION OF THE A-CHECK INSP.