Table of Contents
Advertisement
RANS S-21 OUTBOUND
Refer to section 6 of parts and figure drawings.
1.
Clean and debur all 4 wing spars. A grease cutting detergent is recommended.
2.
Cleco the Wing Tip Rib to the tip of the FWD Wing Spar. Refer to FIGURE 06-01
for location. Check to be sure the Spar is flush with the outer side of the Tip Rib.
If not, then trim the FWD Wing Spar. If desired, the Wing Spar may be left
untrimmed and then trim the wing tip to match the slight joggle the extra bit of
spar length causes. Remove Wing Tip Rib when completed.
3.
Cleco the FWD and AFT Spar Attach doublers and the FWD and AFT Truss
doublers in place.
a.
The two FWD Attach Doublers go on the inside of the Forward Wing Spar
at the wing root.
b.
The FWD Spar Truss Doubler goes on the back side of the Forward Wing
Spar.
c.
The AFT Spar Attach Doubler is on the backside of the Rear Spar at the
wing root. Notice there is an up and down to the doubler, due to mounting
hole alignment.
d.
The AFT Spar Truss Doubler is on the forward side of the Rear Spar.
e.
On the FWD Spar FWD Doubler, the notch in the doubler points toward
the top of the wing and the doubler contours to the inside of the Forward
Wing Spar.
4.
If the FWD Spar FWD Attach Doubler does not quite sit flat on the inside of the
Forward Wing Spar, radius the bottom corner until it sits flat.
5.
Rivet the doublers in place using the appropriate rivets. Exclude the holes shown
in FIGURE 06-01.
Obtain a 3/8" drill bit long enough to pass through both sides of the FWD spar.
6.
Test drill on a scrap piece of aluminum, to be assured of a tight fit on a 3/8" bolt.
Drill through the forward and aft 5/16" pilot holes on the FWD spar, near the root,
7.
with the 3/8" drill.
8.
Use a 5/16" drill to transfer drill through the FWD Spar Truss Doubler and the
Forward Wing Spar where the truss bolts to the spar.
9.
Refer to Spar Assembly parts manual drawing and FIGURE 06-01A1 for the Aft
Spar Attach Fitting and hardware. Install, but do NOT tighten until mating the
wings to the fuselage.
TEXT MANUAL
WING
WING SPAR ASSEMBLY
57
09/11/2018
Advertisement
Table of Contents
