As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
EMERGENCY LIGHT FOUND INOP DURING OPS CHECK OF L/H OVERWING SLIDE SYSTEM. REMOVED AND REPLACED L/H OVERWING SLIDE BATTERY PACK IAW B767 AMM 33-51-07. OPS CHECK NORMAL. NOTE: AIRCRAFT WAS IN MAINTENANCE CHECK AT THE TIME THE ISSUE WAS FOUND. FAA PMI HAS BEEN NOTIFIED.