What was found
DURING 100-HOUR INSPECTION, FOUND UPPER LEFT TAILBOOM ATTACH FITTING CRACKED. ALSO, FOUND LEFT FUSELAGE AFT LONGERON CRACKED. LONGERON PIN 206-031-329-037. ON REMOVAL, REPAIR, FITTING HAD A .020 INCH GAP BETWEEN LONGERON AND FITTING CREATING A LOADED CONDITION WHEN RIVETED AT FACTORY.