What was found
BOS - THE RIGHT HAND, MID-CABIN EMERGENCY POWER SUPPLY UNIT FAULTED DURING TEST. MAINTENANCE REPLACED THE RIGHT, MID-CABIN EMERGENCY POWER SUPPLY UNIT.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
BOS - THE RIGHT HAND, MID-CABIN EMERGENCY POWER SUPPLY UNIT FAULTED DURING TEST. MAINTENANCE REPLACED THE RIGHT, MID-CABIN EMERGENCY POWER SUPPLY UNIT.