As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DOOR L1 EMERGENCY POWER PACK (M33424) CAPACITY CHECK FOUND CAN''T STAYED EMERGENCY LIGHTS ON FOR 15 MINUTES. REF HAECO NR NO.94786 08. REPLACED DOOR L1 E MERGENCY POWER PACK (M33424) AND PERFORMED THE INSTALLATION TEST THE RESULT FOUND NORMAL AS PER AMM 33-51-06-960-802 REV.100.