As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
RT ENG VALVE LT - CAME ON DURING FLIGHT (BRIGHT). ACFT GROUNDED. RAN NR2 ENG, ENG VALVE LT FLICKERED THEN WENT OUT, RANG OUT SW DP1207 ON HMU. FOUND HPSOV SW TO BE BAD WDM 76-21-21. REPLACED NR 2 ENG HPSOV SW REF MM 73-21-09. OPS CK GOOD GROUND VERIFICATION SUCCESSFUL.