What was found
AIRCRAFT IN BASE MAINTENANCE: AN OPERATIONAL CHECK OF THE EMERGENCY LIGHTING SYSTEM POWER SUPPLY UNITS PER AMM 33-51-00 PRODUCED THE FOLLOWING CLASS 1 MAINTENANCE MESSAGES: ESCAPE SLIDE LT/ EPSU (10WL) FWD L, EMER LT/ EPSU (10WL) FWD L, EXIT SIGNS/ EPSU (10WL) FWD L, FPEEPMS AISLE LT/ EPSU (10WL) FWD L, FPEEPMS CROSS ISLE LT/ EPSU (10WL) FWD L. MAINTENANCE REPLACED THE L1 DOOR SLIDE AND ACCOMPLISHED A SATISFACTORY OPERATIONAL CHECK OF THE EMERGENCY LIGHTING SYSTEM PER TASK CARD 26L00025010 AND AMM 33-51-00.