As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ATO - AT 15 KNOTS DUE TO A (NAV PRED W/S DET FAULT). FLIGHT CREW PLACED PREDICTIVE WINDSHEAR ON MEL. LHR PERFORMED BITE TEST OF WXR 1 AND 2 WITH NO FAULTS. CONTINUED ON MEL DUE TO PREVIOUS WXR2 FAULT. THEN R/R WX TRANSCEIVER 2 (1SQ2) PER A330 AMM 34-31. OK FOR SERVICE. MEL/PLAC REMOVED.