What was found
EMERGENCY LIGHTS FAIL TEST "EPSU INT LOAD AFT L". REMOVED AND REPLACED AFT LEFT (EPSU) EMERGENCY POWER SUPPLY UNIT PER AMM 33-58-30-401.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
EMERGENCY LIGHTS FAIL TEST "EPSU INT LOAD AFT L". REMOVED AND REPLACED AFT LEFT (EPSU) EMERGENCY POWER SUPPLY UNIT PER AMM 33-58-30-401.