As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLT 6499, ON HEAVY MAINTENANCE CHECK EMERGENCY LIGHT SYSTEM TEST FAILS FOR "EPSU EXT LOAD EMR L". TROUBLESHOOT EMERGENCY LIGHTING SYSTEM LT EXTERIOR LIGHTS TSM 33-51-00-810-808. LT ESCAPE SLIDE SYSTEM CHECKED OK. RELAMPED LT EXTERIOR OVERWING EMERGENCY LIGHT. OPS CHECK GOOD REFERENCE AMM 33-51-15-710-053.