Drill the floor plate at 60 mm centers using the factory supplied jig. Fit it to the top of the longeron and match drill two holes, fit clecos and finish the balance. Remove floor plate then de-burr holes.
Refer notes: Fuselage Floor Plates Part 2
The seat brackets sit on top of this plate so all holes are countersunk except the last two at Station #3.
Entry Bracket
The bracket required to mount the foot entry was not picked up on the initial reading of the plans and at installation it was noted that the mounting holes will require riveting to the top flange of the support angle. This places the removable floor plate on the top side of the bracket, so it will have to be joggled to fit this installation. The piece marked on the photo to be trimmed will be cut from the bracket to allow a straight joggle.
Position the bracket and mark it's location onto the top side of the port removable plate. The floor plate will have to be trimmed and drilled to these reference marks to fit inside the bracket profile. Cutting off the existing return and drilling a clearance hole for the circular mount allows the plate to fit the bracket.
Locate bracket with floor plate fixed in position on the longeron, drill two hole's into bulkhead at Station #3 locate the bracket.
Remove the floor plate, drill a hole through the flange of the angle to allow the step to be inserted into the bracket.
Match drill holes into the angle faces from the bracket, countersink and rivet.
Match drill all the holes into the bulkheads and pop rivet.
Check the floor plates and adjust to fit inside the perimeter of the bracket then joggle to fit.
 |
| Trial fit of bracket |
Note: An alternative would be to reduce the overall length of the angles allowing the bracket to be installed matching the top-side of the angle.
Joggles in Aluminium
No comments:
Post a Comment