What was found
AIRCRAFT WAS NOT GROUNDED: DURING PS CHECK GOT EMERGENCY POWER SUPPLY UNIT INTERNAL LOAD AFT LIGHT FAULT. REMOVED AND REPLACED EMERGENCY POWER SUPPLY UNIT
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
AIRCRAFT WAS NOT GROUNDED: DURING PS CHECK GOT EMERGENCY POWER SUPPLY UNIT INTERNAL LOAD AFT LIGHT FAULT. REMOVED AND REPLACED EMERGENCY POWER SUPPLY UNIT