As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON TAXI OUT, WX RADAR FAIL AND STAB LIGHTS AND WXR SYS STATUS MESSAGE, RETURNED TO BLOCKS. AND MTX GROUNDED A/C L/H SYSTEM TEST OK R/H SYS TEST OK. OPERATED WXR L/H SYS FAILED, R/H SYS INTERMITTENT. REMOVED CONTROL PWL CONNECTOR. NO DEFECTS NOTED. REINSTALLED PNL IAW AMM 34-43-02. REPLACED DRIVE UNIT OPS CHECK OF L+R SYSTEMS NORMAL IAW AMM 34-43-00. A/C REMAINS NO ETOPS AND MTX RETURNED A/C TO SERVICE