What was found
EMERGENCY LIGHTING WILL NOT WORK UNDER OWN POWER. THEY DO WORK WITH SHIPS POWER ON. R & R BATTERY PACKS DUE TO INTERNAL FAILURE IAW AMM 33-50-05.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
EMERGENCY LIGHTING WILL NOT WORK UNDER OWN POWER. THEY DO WORK WITH SHIPS POWER ON. R & R BATTERY PACKS DUE TO INTERNAL FAILURE IAW AMM 33-50-05.