As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ETOPS SIGNIFICANT SYSTEM - PRE DEPARTURE CREW FOUND R STBY FUEL PUMP SWITCH FAULT LIGHT ON, WHEN PUMP SELECTED ON .SD PAGE DISPLAYS LO. // R STBY FUEL PUMP ASSY REPLACED AND OPERATIONAL TEST CARRIED OUT OK.REF AMM 28-21-51-000-802A AND AMM 28-21-51-400-802A.