09/11/2018
RANS S-21 OUTBOUND
TEXT MANUAL
133
10.
Using a black Sharpie mark the forward edge of the skylight per
FIGURE 10G-
10.
Place the windshield mating strip centered on the skylight with the holes over
the black line. Clamp or tape in place and transfer drill #30. In a later step the
#30 Skylight holes will be drilled to #28. This is a critical step to prevent the
Lexan skylight from cracking. Do NOT drill #28 at this time or it will make for
sloppy transfer drilling.
11.
Using a black Sharpie mark the forward edge of the skylight spacer strips per
FIGURE 10G-10A.
Place the windshield mating strip centered on each spacer
strip, one at a time, with the holes over the black line. Clamp or tape in place and
transfer drill #30. Trim ends of spacer strips to match length of mating strip.
Debur.
12.
Fabricate skylight trim strips per
FIGURE 10G-11
.
13.
Lay the outer hold down strip, outer hold down spacer and outer trim strip in
position just inboard of the inboard row of wing rivets with the front edge 5/8"
from wing skin seam on the leading edge spar. Be sure the outer edges, of each
piece, are stacked together flush to each other. Use 2" wide masking tape to
secure the parts. Place and transfer drill #30 Cleco as you drill. See
FIGURE
10G-12
.
14.
To fit and trim the skylight remove outer trim strip. Re-cleco hold down strip and
spacer strip in place forming the space where the skylight is to fit. With the
skylight centered trim the outer edges of the skylight to fit between the spacer
strips. Trim to length by over lapping 1 1/2" inches past the edge of the top tail
cone skin.
15.
Lay the skylight against the aft edge of the windshield. Check the fit of the
windshield. A proper fit is when the windshield lays on top of the forward section
of the three cabin ribs with no space between. Move the windshield as needed to
achieve the proper fit. Re-trim skylight if the windshield has been moved aft to
achieve proper fit. Mark where the ribs lay under the Lexan with a marker. Trim
the upper and lower protective coating out of these areas
.
Do
NOT
cut into the
skylight.
HINT:
Lift the protective coating up slightly in the area to be trimmed
away. Cut only the protective coating with a razor knife.
16.
Re-cleco the outer trim strip in place to hold the windshield and skylight down.
17.
Cleco the Upper and lower mating strips, and mating strip support tube to the
skylight. Refer to the parts drawing, only the top mating strip has bent edges.
