As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFTER REMOVING ACCESS COVER FOR AIR-CONDITIONING RELAYS, FOUND CORROSION ON SIDE WALL. REMOVED EXTERNAL POWER RECEPTACLE PLATE FROM INTERCOSTALS. REPLACED INTERCOSTALS. REPLACED POWER RECEPTACLE PLATE. NOTE: 533SW IS A SEAPLANE WITH A ELEVATED EXTERNAL POWER RECEPTACLE (STC SA06-80).