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EFFECTIVITY:
CIRRUS AIRPLANE MAINTENANCE MANUAL MODELS SR22 AND SR22T
19 Sep 2017
5
At RH empennage panel, install tail cross pin through RH and LH empennage
access tooling holes securing outboard sides of portable tool to empennage.
6
Install mounting bolt to forward side of portable tool.
7
Position pass-through hole of mounting bolt to elevator hinge bracket.
8
Install locking pin to secure mounting bolt to elevator hinge bracket.
9
Place aircraft hydraulic jack under LH and RH wing at jack points. (Refer to 07-10)
10
Place horizontal stands under LH and RH horizontal stabilizer approximately 12
inches (30 cm) from outboard edge.
11
Use feeler gauge to verify horizontal is centered within opening.
12
For yaw adjustment, measure with tape measure from HS72 hinge pin to forward
longitudinal leveling point on the same side. Adjust yaw position of horizontal stabi-
lizer so that distances are equal.
13
For roll adjustment, rotate rubber foot bolt on horizontal stands clockwise or counter-
clockwise as required to eliminate roll. Verify that each side of horizontal stabilizer is
perpendicular to the vertical spar.
(f) Determine angle of incidence at bonding flange on fuselage.
CAUTION: Apply masking tape to template feet to protect contact locations on wing
surface.
1
At LH and RH sides of horizontal stabilizer, identify horizontal incidence templates
for HS36 and HS72 and position templates to horizontal stabilizer as marked.
2
Position digital level at each template and measure angle of incidence.
3
Verify angle of incidence at all template locations is measured at 0.60°+/-0.20°.
CAUTION: Ensure adjustment to rubber foot positions does not bring upper or
lower gaps outside of maximum bond thickness tolerances.
Using Permanent Floor Mounted Fixture: If angle of incidence is not within toler-
ance, lower locking handle and rotate rubber foot bolt clockwise or counter-clock-
wise as required to attempt adjustment for angle of incidence. Ensure template is
positioned flush with the horizontal stabilizer. Repeat verification for angle of inci-
dence tolerance.
Using Portable Tool: If angle of incidence is not within tolerance, rotate knurled
adjustment knob on portable tool clockwise (to raise angle of incidence value) or
counter-clockwise (to lower angle of incidence value) as required to attempt adjust-
ment for angle of incidence.
Using Weighted Average Horizontal Incidence Equation:
Note: The equation below is only applicable for incidence measurements
taken at Horizontal Station 36 and 72.
Θ
HT
= 0.3417(
Θ
HS36L
+
Θ
HS36R
) + 0.1583(
Θ
HS72L
+
Θ
HS72R
)
Θ
HT
= Angle of incidence to set
Θ
HS36L
= Angle of incidence measured at Left Horizontal Station 36.
Θ
HS36R
= Angle of incidence measured at Right Horizontal Station 36.
Θ
HS72L
= Angle of incidence measured at Left Horizontal Station 72.
Θ
HS72R
= Angle of incidence measured at Right Horizontal Station 72.
If angle of incidence cannot be brought within tolerance (0.60°+/-0.20°), contact Cir-
rus Design for disposition.