Document: SLSA-MIP-5-4-0-US
Date of Issue: 05/2016
Revision: -
6-18
6.4.2.1
Friction in the longitudinal control system
Balance elevator through the pulley to get it to neutral position.
Measure force at the moment of elevator deflection from neutral position by the
dynamometer attached on the end of the control stick. Max force can be 1.5 kg (
3.3
lbs.
).
6.4.2.2
Friction in lateral control system
Set ailerons to neutral position.
Measure force at the moment of aileron deflection from neutral position by the
dynamometer attached on the end of the control stick. Max force can be 1.5 kg (
3.3
lbs.
).
6.4.2.3
Friction in directional control system
Set rudder to neutral position.
Act in direction of control force (
pilot’s feet) by means of the spring scale attached to the
foot control pedal. Measure force at the moment of rudder deflection from the neutral
position. Max force can be 4 kg (
8.8 lbs.
).
6.4.3
Checking control surface deflections
The control surface deflections are shown in the following table:
Aileron
24° ± 2° up
16° ± 2° down
Rudder
30° ± 2° right
30° ± 2° left
Elevator
30° ± 2° up
15° ± 2° down
Wing flap
10° ± 2°
20° ± 2°
30° ± 2°
Difference between
L/R flap deflections
± 0.5°
Elevator trim tab
15° ± 2° up
25° ± 2° down
Aileron trim tab
15° ± 2° up
20° ± 2° down
Tab. 6-1
Deflections of control surfaces
For measuring deflections use protractor with deflecting pointer that will be attached to an
appropriate control surface by means of the clamp.
6.4.3.1
Measuring aileron deflections
Attach the protractor with the deflecting pointer on the upper skin of the aileron by
means of the clamp.
Set the aileron to neutral position.
Set the protractor to 0° – starting value for measuring.
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