As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING A 100-HOUR INSPECTION, THE LANDING LIGHT SUPPORT WAS FOUND INSTALLED UPSIDE-DOWN PREVENTING THE CASE FROM DRAINING. SUBMITTER SUGGESTS INATTENTION DURING RE-ASSEMBLY. PLACARD THE PART 'THIS SIDE UP'. ALIGN PROPERLY AND RIVET TO AIR FILTER RETAINER.