As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FORWARD EMERGENCY LAMP IN LEFT OVERWING HATCH WINDOW LIGHT ASSEMBLY DOES NOT ILLUMINATE.<[01] UPON FURTHER INVESTIGATION; FOUND EMERGENCY BATTERY PACK M1668 TO BE BAD; BATTERY PACK REPLACEMENT WILL BE DOCUMENTED ON TTG8Q00TJZSW;[02] VERIFIED CORRECTIVE ACTION #1