As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
REPEAT WRITE UP "WXR FAIL" ON BOTH CAPT. AND F/O HSI'S - WENT ON/OFF SEVERAL TIMES THROUGHOUT FLIGHT.PERFORMED WEATHER RADAR SYSTEM TEST NO FAULTS AT THIS TIME IAW B767-300 AMM 34-43-00. FOUND L WX RADAR TRANSCEIVER LOOSE IN RACK. RESECURED TRANSCEIVER IAW B767-300 AMM 34-43-01. NO FAULTS AT THIS TIME.