What was found
AFTER LANDING, GEAR RETRACTION CREW REPORTED AN IMMEDIATE VIOLENT SHAKING THROUGHOUT THE AIRCRAFT. GEAR INDICATION SHOWED RED LIGHT ONLY. GEAR WAS EXTENDED AND SHAKING STOPPED AND INDICATED THREE GREEN, DOWN AND LOCKED. CREW DECLARED EMERGENCY AND LANDED AIRCRAFT. MAINTENANCE INSPECTED AND FOUND NOSE LANDING GEAR SQUAT SWITCH OUT OF ADJUSTMENT. ADJUSTED SWITCH AND PERFORMED DANGEROUS TURBULENCE INSPECTION. NO DISCREPANCIES WERE NOTED