As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LT COMMUNICATIONS WAS COMPLETELY INOPERATIVE. AIR TURNBACK PROCEDURE WAS ACCOMPLISHED. LT AUDIO BOX WAS CHANGED IAW AMM 23-50-02 P 201 AND FLIGHT INTERPHONE CB A-10 WAS RESEATED. SYSTEM OPERATION WAS CHECKED IAW AMM 23-00-00 PG 1. CHECKED OK.