What was found
EMERGENCY LIGHTS FLASH WHILE IN FLT. TURNING SWITCH TO OFF TURNS THEM OFF BUT WHEN EVER THE SWITCH IS IN THE ARM POSITION THEY FLASH. REMOVED FAULTY #1 EMERGENCY BATTERY AND INSTALLED MODIFIED EMERGENCY BATTERY IAW MM 33-52-01. PERFORMED OPS TEST OF THE EMERGENCY BATTERY IAW MM 33-52-01, ALLOWING THE BATTERIES TO CHARGE FOR 30 MINS, REMAIN ON FOR 90 MINUTES, CHARGE FOR AN ADDITIONAL 90 MINUTES, WITH NO DEFECTS NOTED.