As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(AUS) LEFT WING UPPER SKIN CRACKED IN AREA OF MLG WHEELWELL CENTER RIB. AIRCRAFT HAS A FACTORY INSTALLED RIB REINFORCEMENT FITTED AND IS ALSO OUTSIDE OF THE SERIAL NUMBER RANGE AS REFERENCED IN AD/CESSNA400/105 AND SERVICE LETTER MEB 76-2.