What was found
BOTH LEFT AND RIGHT OVERWING EXIT LIGHTS GO OFF 20 - 30 SECONDS INTO TEST. ALL OTHER EMERGENCY LIGHTS ON. REPLACED THE BATTERY CHARGERS M737 AND M734 IAW AMM 33-51-07. REPLACED THE BATTERY PACKS.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
BOTH LEFT AND RIGHT OVERWING EXIT LIGHTS GO OFF 20 - 30 SECONDS INTO TEST. ALL OTHER EMERGENCY LIGHTS ON. REPLACED THE BATTERY CHARGERS M737 AND M734 IAW AMM 33-51-07. REPLACED THE BATTERY PACKS.