What was found
LEFT NLG TIRE: DURING GEAR RETRACTION AFTER TAKEOFF NOSE GEAR ENTERS GEAR WELL AND VIBRATES AND LOUD HUMMING. VIBRATES ENOUGH TO SHAKE THE DASH. REPEAT WRITE UP. *** CORRECTIVE ACTION *** JACKED AIRCRAFT. EVALUATED NOSE WHEEL TORQUE AND FOUND WHEELS PROPERLY TORQUED. FOUND LH NOSE WHEEL OUT OF ROUND. LIKELY CAUSE OF VIBRATION. REMOVED LEFT AND RIGHT NOSE WHEEL ASSEMBLIES AND INSTALLED OVERHAULED LISTED BELOW I/A/W CL-650 AMM 32-42-01. DOWNJACKED AIRCRAFT.