What was found
PAX SITTING 35G CLAIMS TO HAVE SEEN A SPARK BETWEEN 34G AND SIDEWALL. ANOTHER PAX VERIFIED THAT. NO CREW MEMBER OBSERVED ANYTHING AND THERE WAS NO EVIDENCE OF A PROBLEM TO THE CREW. INSPECTED ALL WIRING AND SEAT UNITS. NO PROBLEMS FOUND. AS PRECAUTION FWD EMPOWER SYSTEM TO MCO/PLAC PER MEL 25-20-01I. ALL CBS PULLED/COLLARED. FOUND CHAFFED WIRING AT 34G AT SEAT TRACK. REPAIRED WIRING PER BOEING WIRING STANDARD PRACTICE MANUAL.