assembled inspar ribs to Stringer web assembly. Rivet inspar ribs to the structure using pneumatic squeezer inserted snap busing into 5/8" holes Manufactured Head of rivets OUTSIDE in order to have easier drill-out option in necessary as indicated in MIL-R-47196A(MI) (3.3.3.1 Head direction. Unless specified on the engineering drawing or specification, the manufactured head of the rivet shall be located on exterior surfaces.)
