As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
EMER LIGHTS DON'T TEST PROPERLY. BATTERY PACKS 1 AND 3 DON'T ILLUMINATE ANY LIGHTS AFTER 2 30 MINUTE CHARGE SESSIONS. REMOVED NR 1 EMER LIGHT BATTERY PACK AND INSTALLED A NEW NR 1 EMER LIGHT BATTERY PACK, REMOVED NR 2 EMER LIGHT BATTERY PACK AND INSTALLED NEW NR 2 EMER LIGHT BATTERY PACK, REMOVED NR 3 EMER LIGHT BATTERY PACK AND INSTALLED A NEW NR 3 EMER LIGHT BATTERY PACK IAW AMM 33-50-10. OPS CHECK NORMAL