What was found
COTTON PATCHES GLUED TO THE FLANGED HOLES TO SEAL THE INSIDE OF THE WING AT THE SPOILER/SPEED BRAKE AREA WERE FALLING OUT. THE AIRCRAFT AT TIME OF ITS FIRST ANNUAL HAD LOST THREE-FOURTHS OF THE SEALS IN BOTH SPOILER BOXES. THESE COVERS PREVENTED TURBULENT AIR FROM ENTERING THE INSIDE OF THE FABRIC COVERED SECTIONS OF THE WINGS DURING SPOILER DEPLOYMENTS. SUBMITTER STATED THE CONTINUED OPERATION WITHOUT THE COVERS MAY AT SOME POINT CAUSE THE FABRIC COVERING TO DISBOND FROM THE RIBS. NOTE: THE MANUFACTURER DOES NOT USE RIB STITCHING ON THIS AEROBATIC CAPABLE AIRCRAFT.