Maintenance Manual STEMME S10-VT
Date of Issue: Jan. 01, 1998
Page 6-7
Amendment Nr. 22
Date: Jan. 10, 2014
A4011121_B23.doc
Doc. No. A40-11-121
6.4 Flight Control System
6.4.1 Deflection of Control Surfaces, Control System Friction, and Control Forces
After any adjustment or assembling works on the control system
, control deflections, friction and forces
in the control system must be measured. For measurement procedures see form "Rigging Report" (Annex
D). Rated values:
6.4.1.1 Control Surface Deflections
Elevator:
Measuring point is trailing edge of inner rib of elevator (140 mm / 5.51 in. from hinge line).
Full Deflection
- 48
+2
/
-5
mm
(-1.89
+0.08
/
-0.2
in.)
+ 48
+5
/
-2
mm
(+1.89
+0.2
/
-0.08
in.)
Rudder:
Measuring point is lower rear corner of control surface (420 mm / 16.5 in. from hinge line)
Full Deflection:
+220 ± 15 mm
(+8.7 ± 0.6 in.)
-220 ± 15 mm
(-8.7 ± 0.6 in.)
Wing Flaps and Ailerons:
Flap
Lever
Control
Stick
Measurement points:
1) aileron: inner rib of the control surface, 163 mm / 6.42 in. from hinge line.
2) wing flap: inner rib of the control surface, 175 mm / 6.89 in. from hinge line.
left aileron
left wing flap
right wing flap
right aileron
Position Position
mm (in.)
- 10°
neutral
-31 ± 4 (-1.22 ± 0.16)
-31 ± 4 (-1.22 ± 0.16)
- 5°
neutral
-15 ± 4 (-0.6 ± 0.16)
-15 ± 4 (-0.6 ± 0.16)
0
left
neutral
right
-48 ± 4 (-1.89 ± 0.16)
0 ± 2 (0 ± 0.08)
+27 ± 3 (1.06 ±0.12)
0 ± 2 (0 ± 0.08)
0 ± 2 (0 ± 0.08)
+27 ± 3 (+1.06 ± 0.12)
0 ± 2 (0 ± 0.08)
-48 ± 4 (-1.89 ±0.16)
+ 5°
neutral
+15 ± 4 (+0.6 ± 0.16)
+15 ± 4 (+0.6 ± 0.16)
+ 10°
neutral
+31 ± 4 (+1.22 ± 0.16)
+31 ± 4 (+1.22 ± 0.16)
L (+16°)
neutral
+51 ± 4 (+2 ± 0.16)
+51 ± 4 (+2 ± 0.16)
6.4.1.2 Friction in Control System
measuring point: at the operating lever / control stick, mid of the grip
Elevator
5 ± 2 N (1.1 ± 0.45 lbf)
Aileron
15
+5
/
-8
N (3.4
+1.1
/
-1.8
lbf)
Rudder (tail wheel off the ground!)
25
+5
/
-8
N (5.6
+1.1
/
-1.8
lbf)
6.4.1.3 Pilot Forces
Following rated forces apply for approx. 20°C, measured on ground. Measuring points for airbrake and wing flap forces
are the respective handles, for down-spring / trim spring forces the uppermost finger notch of the control stick handle.
Airbrake over-centre lock and unlock
150 + 50 N (34 + 11 lbf)
Wing Flap: Counter force in position L
125 ± 25 N (28
±
6 lbf)
Elevator: Down-Spring / Trim-Spring Force at uppermost finger
notch of stick, fully pushed, trim setting fully "nose down"
40 ± 5 N (9
±
1.1 lbf)
Elevator: Down-Spring / Trim-Spring Force at uppermost finger
notch of stick, fully pulled, trim setting fully "nose down"
60 ± 5 N (13.5
±
1.1 lbf)
