What was found
INSTALLED BALL JOINT OR SWIVEL PN S2999-1 ON MIXTURE CONTROL CABLE FRONT AND REAR ENGINES AT TIME OF ENGINE INSTALLATION. A/C WAS TEST FLOWN AND FERRIED TO PAINT SHOP AND RETURNED. PREVIOUS TO ANY ADDITIONAL ADJUSTMENT AND WHILE IN THE COCKPIT PERFORMING A MAINTENANCE CHECK AND OPERATING THE MIXTURE CONTROL, THE SWIVEL SEPARATED ON THE REAR ENGINE CABLE. FURTHER OPERATION, IT WAS NOTED THE FRONT ENGINE MIXTURE CONTROL BALL JOINT SWIVEL CAME APART. MFG WAS NOTIFIED.