As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CLE - MAINTENANCE FOUND THE EMERGNCY LIGHT IN THE COCKPIT CEILING WILL NOT ILLUMINATE WHEN TESTED. MAINTENANCE FOUND BATTERIES CORRODED WHICH IN TURN HAD SPREAD TO THE LIGHT ASSEMBLY. REMOVED AND REPLACED ENTIRE LIGHT ASSEMBLY (P/N 10-0067-9) INCLUDING BATTERIES. OPERATIONAL CHECK GOOD. (M)