STEMME S12, Maintenance Manual

Page: 151 / 290

DOCUMENT NUMBER:
L500-912.820 ISSUE JUL 20, 2016
AMENDMENT: 00
DATE: --
CHAPTER- PAGE 6-9
MAINTENANCE MANUAL STEMME S12
6.4.1.2 FRICTION IN CONTROL SYSTEM
MEASURING POINT
At the operating lever / control stick, mid of the grip.
If installed temporarily disconnect autopilot actuators.
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.
If installed temporarily disconnect autopilot actuators for elevator.
Air brake over-center 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, stick full forward, trim setting
fully “nose down”.
40 ± 5 N (9 ± 1.1 lbf)
Elevator: Down-Spring / Trim-Spring
Force at uppermost finger notch of
stick, stick full aft, trim setting fully
“nose down”.
60 ± 5 N (13.5 ± 1.1 lbf)