As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
MKE - FOUND EMERGENCY LIGHTS ARM AND CHARGE CIRCUIT BREAKER WAS TRIPPED, RESET IT AND IT TRIPPED AGAIN. FOUND 2 BATTERY PACKS FAULTY, REMOVED AND REPLACED BOTH. ONE LISTED BELOW, THE OTHER P/N NR 60-0304-51 S/N 9915. THE -31''S ARE BEING CONVERTED TO -51''S BY SB NR 60-0304-33-0021. (M)