Step 1:   Locate the two 98 1/2" lengths of AA6-125X3/4X3/4 angle and cut them to the length given in Figure 1. Dimension is (98 1/8")

Step 1a:  As shown in the figure, make a mark on each Longeron 20 11/16" from the end. This mark is used to locate the bend made in the next step. These angles are now the F-1032-L & R Longerons.

Drill a 1/4" hole (first drill a #40 pilot hole) in each longeron located according to the dimensions in the blowup, then remove the shaded area indicated. Finish the edges smooth. The notches provide clearance for the F-1011C Horizontal Stabilizer Attachment Bars.

Step 2: The front of the longerons need to be bent down just under 2" at the mark made in step 1.

Place the F-1032-R Longeron in an aluminum padded vice, as shown in Figure 2, with the mark at the end of the jaws. Pre load the longeron in the direction shown (sideways in the figure, but down when the longeron is in the plane) and, using a rubber mallet, strike the longeron firmly near the bend mark.

Check the angle against the F-1073-R Skin, as shown in Figure 3, and adjust if necessary.

Bending an angle can also cause it to bend in a direction 90 degrees to the intended bend direction. If this is the case for the longeron, place it back in the vice and straighten out the unwanted bend. Make sure the intended bend angle hasn't changed.

Step 3: Repeat Step 2 for the F-1032- L Longeron, and make sure to bend it in the correct direction. Check it against the F-1073-L Skin as shown in Figure 3.

Step 1: Place the F-1078 Forward Bottom Skin upside down across two sawhorse which are at least 38" tall. As shown in Figure 1, cleco the F-1007 and F-1008 Frames and F-1010 Bulkhead to the skin. If the stiffeners formed along the side edges of the of the forward bottom skin interfere with notches in the frames, either the stiffeners can be bent or the notches in the frames can be enlarged slightly until the stiffeners clear. Locate the forward sawhorse just aft of the F-1007 Frame.

Step 2: Slide the two F-1047 F Stiffeners through the notches in the frames as shown in Figure 1. The aft end of the stiffeners should be captured between the F-1008 Frame tabs and the F-1078 Forward Bottom Skin.

Step 2a: Center the forward end marks and the rivet hole centerlines (see Page 10-5, Step 20 Of both stiffeners in the indicated holes in the F-1078 Forward Bottom Skin, then match-drill the holes into the stiffeners using a #40 drill. Keeping the rivet hole centerline visible through the holes in the skin, march drill the remaining holes into the stiffeners using the same drill. Once drilled, the stiffeners become dedicated left and right parts.

Step 3: Slide the F-1047G Stiffener through the notches in the frames as shown in Figure 1. The ends of the stiffener should be captured between the frame tabs and F-1078 Forward Bottom Skin.

Center the aft end mark and the rivet hole centerline of the stiffener on the indicated hole in the forward bottom skin. Match drill the skin holes into the stiffener in the same manner as the F-1047F Stiffeners were drilled.

Step 4: Cleco the F-1029-L-R Bell crank Ribs to the F-1078 Forward Bottom Skin and the F-1007 Frame, as shown in Figure 1, then final-drill #30 the six holes common to the bell crank ribs and frame.

Step 5:  Slide the assembly to to left side of the sawhorses, then position one of the two F-1047C,D, and E Stiffeners in the frame and bulkhead notches as shown in Figure 2.

Step 6:  Cleco the F-1073-R Side Skin to the frames and bulkheads and to the F-1078 Forward bottom skin.

Step 7: Center the forward end marks and rivet hole centerlines of the F-1047 C, D, and E stiffeners on the indicated holes in the F-1078-R Side Skin. Match drill #40 holes n the stiffeners in the same manner as the previous stiffeners. These stiffeners are now dedicated right parts.

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