Fastener cover for flanged joint

A fastener cover for a flanged joint including first and second annular flanges extending about an axis, comprising:

• a plurality of arcuate fastener cover segments arrayed about the axis to form a 360 degree annulus, each fastener cover segment extending between first and second circumferential ends and including:
• a first radial wall, a second radial wall axially spaced-apart from the first radial wall, an arcuate, axially-extending outboard wall interconnecting the first and second radial walls, wherein, collectively, the first and second radial walls and the outboard wall define a cavity for receiving the first and second flanges and portions of fasteners which protrude from the flanges;
• and
• an attachment structure spaced away from the first radial wall and including a clearance hole for a fastener shank, the attachment structure comprising at least one fastener pocket including sidewalls extending axially from the first radial wall and defining a tubular shape which is closed off by a floor plate, wherein the clearance hole passes through the floor plate.