Step 29: Vacuumed the rivet tails and drill shavings from the interior of the fuselage.
Step 30: Tapped the Spar Pin Bushings in the Center Section foreward slightly to provide access to the fwd most rivets on the F-1204U-B and F-1204T-2 Angles. Riveted the angles to the Center Section using CR 3213-4-5 rivets. Then tapped the Spar Pin Bushings back in place.
