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AIRCRAFT MAINTENANCE MANUAL
ELEVATOR TRIM TAB RIGGING
A. Place the trim tab control lever in
cockpit in the neutral position.
B. Adjust push rods to position both the
aft fuselage and stabilizer bell cranks
in a center (neutral) position.
C. Place elevator in neutral position.
Adjust the length of push rod,
between
the
assemblies.
D. Tighten all bolts.
E. Loosen bolts attaching trim control
lever stop and adjust the stop to
provide proper trim tab travel. The
trim tab travel should be 8 (±1)
degrees up and 22 (±1) degrees
down.
*NOTE *
When measuring trim tab
travel, the elevator should be
in the neutral position.
F. Measure free-play of the tab at the
trim tab horn attaching point. The
total maximum free play should not
exceed 0.125-inch
EMPENNAGE
Ref. Figure 7-9
The vertical stabilizer, rudder, horizontal
stabilizer and elevators are constructed
of Alclad aluminum. All stabilizers are
connected to the fuselage structure by
bolts.
The horizontal stabilizer is
supported by adjustable struts. Rudder
and elevators are attached to the
stabilizers by hinges containing sealed
bearings.
EMPENNAGE REMOVAL
A. Remove rudder and elevators from
stabilizers as outlined previously in
this section of the manual.
B. Remove horizontal struts, being sure
to mark left and right and top and
bottom.
Effective: 03/26/2010
THRUSH AIRCRAFT, INC – MODEL S2R-G10
two
bell
crank
C. Remove
the
removing the single forward bolt and the
8 bolts attaching it to the tail post.
D. Remove the horizontal stabilizer by
removing the two forward and two aft
bolts attaching it to the forward and aft
fuselage attach brackets.
bushing locations and the number of
washers
added
stabilizer need not be re-rigged when
installed.
*NOTE *
It is recommended that empennage
attachment hardware be replaced
with
identical
whenever it is removed.
CAUTION
The forked ends of the struts
are
torqued
horizontal stab. attachments.
Movement
of
require re-torqueing as outlined
in
the
horizontal
installation instructions below.
EMPENNAGE INSTALLATION
Horizontal Stabilizer
Ref. Figures 7-9 & 7-10
A. Install horizontal stabilizer with AN6-46A
bolts on forward attach points with
bushing (P/N 9040-018) (9/16" long)
between
horizontal
forward fuselage attach fitting. Place
bushing (P/N 9040-108) (1 ¼" long)
between the aft stabilizer attach fitting
and the aft fuselage attach fitting and
install AN6-44A bolts. Torque bolts to
350-380 inch-pounds of torque. Check
that the cord line of the horizontal
stabilizer is -0.75º ± .25º (this means
nose-down) relative to the leveling
longeron used for weight and balance
(under the cockpit).
AN960-616 washers under either the
vertical
stabilizer
Note the
so
that
horizontal
new
hardware
to
align
with
the
fork
will
stabilizer
stabilizer
and
Use up to 3 ea.
7-15
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