Deburred & Primed the edges of the existing Attach Angles on the Spar Assys. Step 3: Riveted the 1206T Attach Angles to the Rt. Spar Assy. Riveted the 1206K Attach Angle to the Rt. Spar Stub Doubler. Step 4: Riveted the 1206V Attach Angles to the Spar Assys. Riveted the 1206T Attach Angle to the Lt. Spar Assy.