What was found
DURING MAINTENANCE IN THE CREW COMPARTMENT A KNURLED KNOB WAS FOUND IN THE COPILOT'S SEAT TRACK AREA. KNOB WAS IDENTIFIED AS BEING FROM A THREADED LOCKING SHAFT FOR THE ROCKWELL COLLINS FUSION PFD/MFD ELECTRICAL CONNECTORS. THERE ARE FOUR ELECTRICAL CONNECTORS ON EACH DISPLAY, EACH WITH TWO THREADED LOCKING/SECURING SHAFTS. THE KNURLED KNOBS ARE HELD ON THE SHAFTS BY A SET SCREW IN EACH KNOB. A TOTAL OF FIVE KNOBS WERE FOUND MISSING FROM THE THREE DISPLAYS (PFD1/MFD/PFD2) AND OF THE REMAINING SHAFTS, TEN ADDITIONAL KNOBS WERE LOOSE, THREE WERE MISSING SET SCREWS. WITHOUT THESE KNOBS SECURED ON THE SHAFTS, THE CONNECTOR CAN WORK BACK ON THE SHAFTS AND BECOME DISCONNECTED ELECTRICALLY.