Step 11: Clecows, then riveted the F-01437A and the 13 1/2 [342.9 mm] half of the F-1237F to the F-01437 as shown in Figure 3. Placed the manufactured heads of the rivets on the F-01437.
Completed steps 1-10 page 25iS/U-03 for the 2nd seat
Completed steps 1-10 page 25iS/U-03 for one set of seats Step 1: Removed the hinge pin from an AN257-P2 hinge. Retainws the hinge pin for use later in this section. Step 2: Fabricated the F-1237F from the two AN257-P2 hinge halves using the dimensions given in Figure 1. Step 3: Drilled #30 one locating hole in each half of the F-1237F using the dimensions given in Figure 1. Step 4: Drew a line on the 12 1/2 [317.5 mm] half of the F-1237F as shown in Figure 1. Step 5: Machine countersunk one side of the F-01437A for AN426AD3 rivets as indicated Figure 2. Step 6: Separatef the F-01437A into four individual parts by removing the hatched areas shown in Figure 2. Step 7: Clecoed the locating hole in the 13 1/2 [342.9 mm] half of the F-1237F to the F-01437, then aligned the parts parallel and firmly clamped them together. See Figure 3. Step 8: Match-Drilled #30 the holes in the F-01437 into the F-1237F. Clecoed each hole as it was drilled and continued to verify Step 9: Clecoed two F-01437A to the F-01437, then machine countersunk the F-01437 for double flush rivets. Step 10: Marked the F-1237F and F-01437A so that they can be reassembled in their original configuration. Disassembled and deburred the holes.
