As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ROW 13 A/C EMERGENCY LIGHT OUT. PERFORMED TROUBLESHOOTING IAW B767 AMM 33-51-05 AND SSM 33-51-01. FOUND TERMINAL WIRE AT LAMP SOCKET LOOSE. CORRECTIVE ACTION - TERMINAL TIGHTEN IAW AMM 33-51-05. PERFORMED OPS TEST IAW AMM 33-51-00/ TEST PASSED. NOTE: AIRCRAFT WAS IN MAINTENANCE CHECK AT THE TIME THE ISSUE WAS FOUND. FAA PMI HAS BEEN NOTIFIED.