What was found
RIGHT AND LT BULKHEAD RIBS WHICH SUPPORT NLG ATTACHMENT, AFT OF FIREWALL, WERE FOUND TO BE CRACKED DURING ANNUAL INSPECTION. NOTE THAT THE ACFT HAS BEEN PREVIOUSLY MODIFIED MY ANOTHER SHOP WITH MODIFIED NLG ASSEMBLY, INSTALLED IAW STC SA02069AK AND ENLARGED NOSE AND MAIN WHEELS, INSTALLED IAW STC SA01765SE.