09/11/2018
RANS S-21 OUTBOUND
TEXT MANUAL
134
18.
Position forward edge of rib trim
strips 1/4” away from upper mating strip. Align
holes with center-line of ribs and transfer drill #30. Cleco as you drill. See
FIGURE 10G-17
.
19.
Position center forward trim
strip on the windshield 1/4” forward of the upper
mating strip over the center rib. Align holes with center-line of rib and transfer
drill #30. Cleco as you drill. To prevent cracking of the windshield the trim strip
and windshield will be drilled to #20 after removal.
IMPORTANT:
Use an Acrylic drill bit when drilling through windshield.
20.
Fabricate and drill AFT mating strip per
FIGURES 10G-17 & 19
. Cleco in place.
21.
Before installing the windshield Z strips, they will need to be slightly modified for
optimum fit. Refer to
FIGURE 10G-20
. Note where they need notched to clear
the upper gusset weld and also where the upper corner needs bent to conform to
the windshield shape.
22.
Follow the same procedure to slightly bend the upper corner of the windshield
trim strip. When satisfied with the fit, cleco it and the windshield trim strip spacer
to the windshield Z strip. Verify a good fit along the door tube center-line. Refer
back to
FIGURE 10G-20
. Trim if required.
23.
Sand the upper and lower edges of the fiberglass windshield hold down strip
smooth.
24.
Mark and drill #40 the windshield hold down strip per
FIGURE 10G-23
. Start by
locating the front center of the strip, and drill towards the ends on each side. Use
2" spacing to locate rivet holes stop approximately 8" from the ends. The last
three holes will be located by transfer drilling through the tabs welded on the
cockpit cage.
25.
Tape in place the pre-drilled windshield hold down strip tight against the boot
cowl and windshield. Transfer drill #30 into boot cowl. Cleco as you drill. Trim
the aft ends to be just forward of the door tube center-line. This will allow the
door to close flush with the windshield.
26.
The windshield will be painted in a couple places on the INSIDE to hide the glue
used to hold on the windshield strip and wing cuffs. Using a Sharpie draw along
the top edge of the windshield hold down strip, Hold the wing cuffs in place and
trace around.
27.
Once satisfied with the fit of all components for the windshield and skylight
assembly, mark parts left, right and son on to avoid mix ups during re-assembly
Un-cleco, remove and debur.