Section 26 Mid Fuse Ribs and Bottom Skins Back to Directory Page 26

Section 26 Mid Fuse Ribs and Bottom Skins
Back to Directory
Page 26-2 PDF Page 26-3 PDF

Page 26-5 Thru 26-8

Step 1: Flute the lower flange of the F-1015A-L Outboard Set Rib until the holes in the rib match the corresponding holes in the F-1076 Center Bottom skin.

Cleco the outboard and Inboard Seat rib Subassemblies to the rear Spar Bulkhead Assembly as shown in Figure 2 and Figure 3.

Final-Drill #30 all the holes common between the ribs and the rear spar bulkhead. Uncleco the outboard seat ribs and inboard seat rib subassemblies.

Step 2 Uncleco the F-1005C-L and -R Bulkhead Side Channels from the Rear Bulkhead Assembly.

Cleco then final-drill #30 Left and Right Outboard Seat Rib Subassemblies to the rear spar bulkhead assembly as shown in Figure 3.

Uncleco the outboard seat rib subassemblies from the rear spar bulkhead assembly as shown in Figure 3. Uncleco the outboard seat rib subassemblies from the rear spar bulkhead assembly. Note that the rivets that attach this flange to the rear spar bulkhead assembly are AN4526AD4-4 rivets and the flush head goes on the aft side of the rear spar bulkhead underneath the F-1005C-l and -R Bulkhead Side Channels, See Figure 2. Deburr and dimple these holes now for the head of an AN426AD4 rivet. Cleco the bulkhead side channels back in place.

Step 3: Break apart F-1017B to make the F-1017B-L and -R Seat Belt Attach Ribs. Cut apart the F-1017C to make the F-1017C-L and -R Seat Belt Attach Lugs.

Step 4: Cleco then final-drill #30 the F-1017B-L Seat Belt Attach Rib and F-1017C-L and -R Seat Belt Attach Lugs to the F-1017A-R Rear Seat Rib as shown in Figure 1. This will form a Left Rear Seat Rib Subassembly. Repeat this step to form another Left Rear Seat Rib Subassembly and two Right Rear Seat Rib Subassemblies. The right assembly is a mirror of the left.

Step 5: Cleco the F-1017A-L and -R Rear Seat Ribs, Left and Right Rear Seat Rib Subassemblies and F-1018-L and -R Outboard Rear Seat Ribs to the Rear Spar Bulkhead Assembly as shown in Figure 2 and Figure 3.

Final Drill #30 all the holes common between the ribs and the rear spar.

Step 6: Disassemble and deburr all parts. Final-Drill #40 and Dimple the 3/32 holes in the web of the F-1018-L and-R Outboard Rear Seat Ribs EXCEPT the holes common to the F-1005C-L and -R Bulkhead Channels and the aft row of holes. Prime parts if/as desired.

Final-Drill #40

Dimple called out holes in the Web

Step 7: Cleco the Left and Right Rear Seat Rib Subassemblies to together per Step 4 then rivet them together per callouts in Figure 1.

Step 8: Cleco the Outboard Rib Subassemblies to the Rear Spar Bulkhead Assembly then rivet them together per the callouts in Figure 2.

Step 9: Cleco the F-1005C-L and -R Bulkhead Side Channels to the rear spar Bulkhead assembly the rivet (all but the two rivet locations that will attach the F-1015A-Land-R Outboard Footwell Ribs) them together per the callouts in Figure 2.

Locations left open for further ribs to join

Rivet the F-1005C-L and -R Bulkhead Side Channels to the rear spar Bulkhead assembly

Step 10: Cleco the F-1015A-L and-R Outboard Footwell Ribs and F-1018-L and-R Outboard Rear Seat Ribs to the Rear Spar Bulkhead Assembly then rivet them together per the callouts in Figure 2.

Step 11:Cleco (See Figure 3) then rivet remaining ribs working outboard to inboard to the Rear Spar Bulkhead Assembly per the callouts in Figure 2.

Page 26-6

Step 1: Cleco the Left and Right Rear Seat Subassemblies and F-1017A-L and -R Rear Seat Ribs to the Fuselage Bulkhead Assembly as shown in Figure 1. Final-Drill #30 the holes common between the parts just clecoed together. Cleco the F-1019-L and-R Inbd Baggage Ribs and F-10120-L and-R Mid baggage Ribs to the fuselage Bulkhead Assembly as shown in Figure 1. Final-Drill #30 the holes common between the parts just clecoed together.

Step 2: Cleco the F-1021-L Outbd Baggage Rib between the F-1018-L Outbd Rear Seat Rib and the Fuselage Bulkhead Assembly (See Isometric View on Page 26). Final-Drill #40 the holes common to the outbd seat rib and the fuselage bulkhead assembly. Repeat this step for the F-1021-R Outbd Baggage Rib.

Cleco, then final-drill #30 the WD-1008-l and -R Step mounting Brackets to the baggage ribs as shown in Figure 1.

Step 3: Final Drill #30 then dimple all holes in the upper flanges of the F-1020-L and-R Outbd Baggage Ribs.

Final Drilling the top holes

Dimpling the top #30 Holes

Step 4: Final-Drill #40 and dimple the hole in the aft lower tabs on the F-1019-L and-R Inbd Baggage Rib, mid baggage rib and outbd baggage rib.

Step 5: Disassemble and deburr parts as required. Dimple the holes final-drilled #40 in Step 2. Prime parts if/as desired.

Step 6: Cleco then rivet the Left and Right Rear Seat Rib Subassemblies and F-1017A-L and -R Rear Seat Ribs to the F-1034 Fuselage Bulkhead Assembly as shown in Figure 1. Cleco then rivet the F-1019-L and -R Inbd Baggage Rib and F-1020-l and -R Mid Baggage Rib to the fuselage bulkhead as shown in Figure 1.

Step 7: Cleco then rivet the WD-1008-L and -R Step Mounting Brackets to the F-10121-L and -R Outbd Baggage Ribs per callouts in Figure 1.

Step 8: Cleco per Step 2 then rivet the F-1021-L and -R Outbd Baggage Ribs to the F-1018-L and -R Outbd Rear Seat Ribs and Fuselage Bulkhead Assembly with two keeper rivets per outbd baggage rib as shown in Figure 1.

Step 9: Dimple the holes common between the upper flange of the inboard most Left and Right Rear Seat Subassemblies and the upper flange of the F-1034A Fuselage Bulkhead. See Figure 1.

Page 26-7

Step 1: Cleco the F-1077 Mid Bottom Skin the the F-1076 Center Bottom Skin to the ribs and bulkheads as shown in Figure 1.

Step 2: Final-Drill the nutplate attach holes #40 and the screw holes #19 along the outboard edges of the F-1076 Center Bottom Skin. (See Page 26-8 Figure 2).

Step 3: Cleco the F-1016B-L and -R Floor Stiffeners to the F-1076 Center Bottom Skin, Aft Center Section Bulkhead Assembly, and Rear Spar Bulkhead Assembly (see Figure 2). Final-Drill #40 all holes common between the F-1076 Center Bottom Skin or the F-1077 Mid Bottom Skin and the underlying ribs and bulkheads. Final-Drill #30 the holes in the upper flanges of the floor stiffeners.

Step 4: Dissemble the F-1016B-L and -R Floor Stiffeners, F-1076 Center Bottom Skin, and F-1077 Mid Bottom Skin. Deburr the holes and edges. Dimple the screw holes along the outboard edges of the center bottom skin for a #8 screw. Machine countersink the Aft Center Section Bulkhead Assembly holes common to the center bottom skin. Dimple the remaining common holes in the center bottom skin, mid bottom skin, ribs and bulkheads (except the holes that correspond to tabs that over lay the F-1034A Fuselage Bulkhead and F-1005A Rear Spar Bulkhead Lower Flange). Dimple the holes in the top and bottom flanges of the stiffeners except the holes in the lower tabs. Prime parts if/as desired.

Step 5: Repeat Step 1, Cleco the F-1016B-L and -R Floor Stiffeners in place then rivet the skins to the ribs, bulkheads and floor stiffeners per the rivet callouts in Page 26-8, Figure 1 and 26-8, Figure 2.