Section 28 Fwd Fuse Ribs, Bulkheads & Bottom Skin
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Page 28-4 thru P 28-7
Step 1:Using a #12 bit, drill a hole in the F-1033-L Control Column Mount located as shown in Figure 1.
Repeat for the F-1003-R Control Column Mount
Radius the corners and remove material from the middle of both control column mounts as shown in Figure 1. (Made the initial cuts with a band saw and finished the edges with combination of 3M wheel and a file.)
Step 2: Bolt the F-1043B-L Fwd Fuselage Bulkhead to the F-1042-L Bulkhead Side Channel as shown in Figure 2.
Bolt the Outbd Fwd Seat Rail Support-Left to the fwd fuselage bulkhead as shown in Figure 2.
Bolt one of the Inbd Fwd Seat Rail Supports to the fwd fuselage bulkhead as shown in Figure 2.
Bolt the F-1004C-L Attach Angle and F-1043D-L Cover Panel to the fwd fuselage bulkhead as shown in Figure 2.
Cleco the F-1004K-L Center Section Plate to the bulkhead side channel as shown in Figure 2.
Cleco the F-1043A-L Fwd Fuselage Bulkhead to the center section side plate, outbd fwd seat rail support, Inbd fwd seat rail support, and attach angle as shown in Figure 2.
Install screw though the cover panel into the fwd fuselage bulkhead/attach angle, attach angle, and outboard fwd seat rails supports as shown in Figure 2.
Step 3: Repeat Step 2 for the right side of the aircraft.
Step 4: Final-Drill #30 all holes common between F-1042L-L Bulkhead Side Channel and the F-100K-L Center Section Side Plate.
Final-Drill #30 all holes common between F-1043A-L Fuselage Bulkhead, the center section side plate, and the bulkhead side channel.
Final-Drill #30 all holes (except those covered by the F-1043-L Cover Panel) common between the F-1043A-L Fwd Fuselage Bulkhead and the following outbd Fwd Seat Rail Support-Left; Inbd Fwd Seat Rail Support; F-1043C-L Attach Angle.
Final-Drill #19 all holes common between the cover panel and either the F-1043A-L or F-1043B-L Fwd Fuselage Bulkheads.
Step 5: Repeat Step 4 for the right side of the aircraft.
Page 28-5
Step 1: Bolt the F-1033-L Control Column Mount to the F-1043B-L Fwd Fuselage Bulkhead as shown in Figure 1.
Bolt the F-1033-R Control Column Mount to the F-1043B-R Fwd Fuselage Bulkhead.
Align each control column mount so that it is parallel to the Inbd Fwd Seat Rail Support and Outbd Fbd Seat Rail Support and clamp it in that position.
Match-Drill #12 three holes in each control column mount using the existing holes in the F-1043B-L/R and F-1043A-L/R Fwd Fuselage Bulkheads as drill guides. See Figure 1.
Un-clamp and un-bolt the control column mounts from the fwd fuselage bulkheads and deburr holes in the control column mounts.
Step 2: Remove one bolt from each of the following parts: F-1042-L Bulkhead Side Channel; Outbd Fwd Seat Rail Support; Inbd Fwd Seat Rail Support; F-1043C-L Attach Angles.
Repeat for the right side of the aircraft.
Final-Drill the open bolt holes.
Remove one of the remaining bolts in each location mentioned above and re-install in a hole that has already been final-drilled.
Repeat this process until all bolt holes have been final-drilled.
Un-bolt the F-1043B-L and F-1043B-R.
Step 3: Remove the F-1043D-L and F-1043D-R Cover Panels from the outbd Fwd Seat Rail Supports, Inbd Fwd Seat Rail Supports, and F-1043C-L and F-1043C-R Attach Angles.
Final Drill #30 the holes common to the F-1043A-L and F-1043A-R Fwd Fuselage Bulkheads, outbd and Inbd fwd seat rail supports, and attach angles that have been blocked by the cover plate.
Uncleco the Inbd and outbd fwd seat rail supports from the fwd fuselage bulkheads and deburr holes in the fwd seat rail supports.
Step 4: Study Figure 2 until you understand the proper orientation of the F-1072 Fwd Fuse Bottom Skin, it is NOT Symmetrical.
Trim the aft end of the upper flanges of the F-1049C-L & -R Forward Fuselage Floor Rib as shown in Figure 2. Trim from center to center of the two "notches" punched in the flange of each fwd fuselage floor rib.
Enlarge the two pre-punched brake line holes to 5/8" diameter as shown in Figure 2.
Inserting clecos from bottom up, Cleco the F-1049A-L & R, F-1049B-L & R, F-1049C-l & R, F-1049D-l & R Fwd Fuselage Floor Ribs, two F-1048D Fuel Filter Brackets, and VA-188 Flo-Scan Mount Bracket to the fwd fuse bottom skin as shown in Figure 2.
Final-Drill #40 all holes common to the fwd fuse bottom skin and the parts clecoed to it.
Page 28-6
Step 1: Cleco the subassembly of the F-1043A-L Fwd Fuselage Bulkhead, F-10433C-L Attach Angle, F-1004K-l Center Section Side Plate, and F-1042-L Bulkhead Side Channel to the F-1072 Fwd Fuse Bottom Skin as shown in Figure 1.
Repeat for the right subassembly.
Cleco the aft tabs of the F-1049A & L, F-1049B & L, and F-1049C-L & R Fwd Fuselage Floor Ribs to the fwd fuselage bulkheads. see figure 1.
Step 2: Break apart the two F-1084 Systems Brackets into individual F-1084A-L, F-1084A-R, and F-1084B Brackets as shown in Figure 2 Cleco the F-1084A-L and F-1084A-R Systems Brackets to the F-1072 Fwd Fuse Bottom Skin and F-1043A-L and F-1043A-R Fwd Fuselage Bulkheads as shown in Figure 1. Do not insert a Cleco in the aft tab of the systems bracket.
Step 3: Position the Firewall Bulkhead Assembly to the F-1072 Fwd Fuse Bottom Skin as shown in Figure 3. Cleco the F-1048-L & R Fwd Fuse Ribs to the F-1043C-L & R Attach Angles,
then tip up the entire assembly so it rests of the firewall bulkhead assembly. Place blocks between the work surface and the four corners of the firewall bulkhead. The blocks must be at least 3" thick to keep the weight from resting on the cabin heat selector boxes.
Inserting clecos from the bottom up, Cleco the fwd fuse skin to the flanges of the fwd fuselage ribs and to the bottom flange of the firewall bulkhead assembly.
Use a "Sharpie Pen" to trace the shape of the elliptical holes in the fwd fuse bottom skin onto the bottom flange of the F-1004K-L & -R Center Section Side Plates. See Figure 1 and 3.
Final-Drill #40 all common to the fwd fuse bottom skin and fwd fuselage ribs, firewall bulkhead assembly, center section side plates, F-1043A-L & -R Fwd Fuselage Bulkheads, and F-1084A-L & -R Systems Brackets.
Page 28-7
Step 1. Tip the Forward Fuselage assembly down to be oriented as shown in Figure 1.
Final-Drill #30 all the holes common to the F-1001A Firewall Bulkhead and forward tabs of the F-1049A-L & R, F-1049B-L & R, F-1049C-L & R and F-1049D-L & R Fwd Fuselage Floor Ribs, See Page 28-5, Figure 2.
Step 2: Cleco the F-1050-L and F-1050-R Fwd Cabin Floor Panels to the F-1048-L & R Fwd Fuselage Ribs, F-1043A-L & R Fwd Fuselage Bulkheads, F-1000C Firewall Lower Channel, and the F-1049A-L & R, F-1049B-L, F-1049C-L & R and F-1049D-l & R Fwd Fuselage Ribs, See Figure 1.
The forward end of the fwd cabin floor panel slips UNDER the Firewall lower Channel.
Final-Drill #30 all holes common to the fwd cabin floor panels and fwd fuselage floor ribs, fwd fuselage bulkheads, firewall bulkhead, and fwd fuselage ribs.
Step 3: Uncleco the F-1050-L and F-1050-R Fwd Floor Panels. See Figure 1.
Dimple the holes in the fwd cabin floor panels as called out in Figure
Final-Drill #40 the nutplate attach holes and #19 the nutplate screw holes in the fwd cabin floor panels. See Figure 2.
Step 4: Deburr all edges and final-drilled holes in the F-1050-L and F-1050-R Fwd Cabin Floor Panels.
Dimple the nutplate attach holes in the fwd cabin floor panels. see Figure 2.
