START BY CLECOING AND DRILLING E-601PP-20 SKIN TO THE E-602PP SPAR AND MARKING.FABRICATE THE STIFFENERS PER INSTRUCTIONS.LAYOUT RIVET PATTERN WITH RIVET SPACING FAN.DRILL STIFFENERS ON DRILL PRESS.MATCH DRILL THE STIFFENERS TO THE SKIN.DEBUR, DIMPLE AND PRIMED.BACK RIVETED STIFFENERS COMPLETE.DRILLED AND CLECOED E-603 TO E-604 RIB. RIVETS POSITIONED TO ALLOW LEAD WEIGHTS TO BE ATTACHED.E-610PP AND E-611PP DRILLED AND FITTED TO THE SPAR.BEND E-609 RIB AND PREPARE TO FLUSH RIVET TO THE SPAR.
