As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PHX - FLT 2266 - DURING ROUTINE MAINTENANCE CHECK, FOUND APPROXIMATELY EVERY 3RD FLOOR PROXIMITY SEAT LIGHT INOP. ALSO, LEFT OVERWING EXIT LIGHT INOP. BITE FAULTS LEFT BATTERIES. REMOVED AND REPLACED MID BATTERY. OPS CHECK AND BITE TESTED GOOD. (M)