What was found
PHX - EEL - EMERGENCY LIGHT SYSTEM TEST AT PRESS TO TEST PANEL FAILED STEP 5 OF T/C I8M05319. MAINTENANCE REMOVED AND REPLACED THE LEFT AFT EMERGENCY POWER SUPPLY UNIT (13WL) IAW AMM 33-51-38-401, OPERATIONAL CHECK WAS GOOD.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
PHX - EEL - EMERGENCY LIGHT SYSTEM TEST AT PRESS TO TEST PANEL FAILED STEP 5 OF T/C I8M05319. MAINTENANCE REMOVED AND REPLACED THE LEFT AFT EMERGENCY POWER SUPPLY UNIT (13WL) IAW AMM 33-51-38-401, OPERATIONAL CHECK WAS GOOD.