As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING THE ACCOMPLISHMENT OF B-CHECK CARD 0617, REQUIRING THE OPERATIONAL TEST OF THE EMERGENCY LIGHT SYSTEM THE EMERGENCY LIGHTS IN THE FORWARD OVERHEAD CEILING PANEL FAILED TO ILLUMINATE. THIS DISCREPANCY WAS TROUBLE SHOT TO A BAD BATTERY PACK CHARGER ASSEMBLY. THE BATTERY PACK WAS REPLACED AND OPERATIONAL CHECKED IAW MCDONNELL DOUGLAS DC9 MM REFERENCE 33-53-0. (M)