As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING INSTALLATION OF LANDING GEAR KIT SK-414, FOUND SUPPORT DEFORMED AND STRUCTURE AT POINT OF ATTACH CRACKED. SUBMITTER URGENTLY RECOMMENDS THIS MODIFICATION BE MADE AN AIRWORTHINESS DIRECTIVE FOR ALL CESSNA 300 AND CESSNA 400 SERIES AIRCRAFT USING ELECTRIC MECHANICAL LANDING GEAR REGARDLESS OF AIRCRAFT TIME OR AGE.