As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
INSPECTION TYPE:ETOP PILOT REPORT-ICE SW SELECTED FROM ON TO OFF EICAS MSG REMAINED ILLUMINATED . LIGHT AND MSG OCCURRED ON T/O ROLL LIGHT AND MESSAGE NOT DISPLAYED WITH SWITCH IN THE ON POSITION REF LOG PAGE 698091. *S/D* R/R WING TAI CONT RELAY K414. R/R RH WING TAI VALVE AS PER M/M 30-11 -02 OPS CHK AND LEAK CHECK NML. PER MM 30-11-02 VALVE PN ON AND OFF 278053704 SN OFF 3404FP