As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
THE FLIGHT CREW REPORTED THAT DURING FLIGHT THE "LEFT BOOST PUMP" ANNUNCIATOR ILLUMINATED. THE CREW RAN THE LOSS OF PUMP CHECKLIST AND COMPLETED THE FLIGHT. THE MAINTENANCE VENDOR PERFORMED AN OPERATIONS CHECK OF THE LT BOOST PUMP, PER THE AMM WITH NO DEFECTS NOTED AT THIS TIME. THE MAINTENANCE VENDOR SWAPPED LOW PRESSURE SWITCHES OPERATIONS CHECKS WERE SATISFACTORY. THE AIRCRAFT WAS RETURNED TO SERVICE.