What was found
EMERGENCY LIGHT INOP AT THE TOP OF THE STAIRS. REMOVED & REPLACED BATTERY PACK & MODULE ASSEMBLY IAW B747 MM 20-51-00, OPS CHECK GOOD IAW B747 MM 33-51-00.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
EMERGENCY LIGHT INOP AT THE TOP OF THE STAIRS. REMOVED & REPLACED BATTERY PACK & MODULE ASSEMBLY IAW B747 MM 20-51-00, OPS CHECK GOOD IAW B747 MM 33-51-00.