What was found
WHILE FLYING THROUGH TURBULENCE SITTING IN THE VIP CHAIR (CABIN RT FWD FACING) A SLIGHT VIBRATION CAN BE FELT COMING THROUGH THE FLOOR AND WILL DIMINISH AFTER LEAVING TURBULENCE. AFTER TALKING WITH MFG TECH SUPPORT, THIS PROBLEM IS COME TO BE KNOWN AS (WING CLUNK). IT IS CAUSED BY THE PLAY IN THE BRACKET VERTICAL LINK SPHERICAL BEARING AND ATTACH BOLT, IE ONE OR ALL. THERE IS NO SB, IL, COMMUNIQUÉ OUT ON THIS PROBLEM BUT MFG IS AWARE AND HAS A REPAIR KIT OUT THAT ONLY CAN BE DONE AT MFG SERVICE CENTER. (GL13200508700) (K)