What was found
COPILOT S WINDOW HANDLE ROTATES OPEN DURING FLIGHT. THE FRONT LATCH STAYS LATCHED, BUT THE HANDLE ROTATES OPEN (HAS TO BE HELD SECURE) AND THE ALIGNMENT ARROWS AT THE AFT END OF THE WINDOW SPLIT APART FROM EACH OTHER. INSPECTED LOCKING MECHANISM OF THE WINDOW AND FOUND OK,FOUND OPERATING MECHANISM CLUTCH NOT PROPERLY ADJUSTED, CRANK ROLLING BY ITSELF. PERFORMED ADJUSTMENT OF WINDOW OPERATING CRANK AND OPERATING MECHANISM CLUTCH AS PER AMM 56-11-02-5.SYSTEM OK. AIRCRAFT OK FOR SERVICE.