CHAPTER 51
PAGE 15
MAINTENANCE MANUAL EXTRA 300/SC
PAGE DATE: 16. June 2008
51-60-00 CONTROL SURFACE BALANCING
51-60-01 Weighing and Determination of Control
Surface Moments
All weighing of control surfaces is performed with surface
removed from aircraft. Weighing and determination of con-
trol surfaces moments is necessary after repairs or painting.
Weigh the control surfaces including the mass balances in
disassembled condition. The aileron weight includes the
spade. Copy page 18, enter the values (W, m, r) there and
check whether the surface weights or moments are within
the given tolerances. If they are not, contact the manufac-
turer for advice.
For the determination of control surface moments use
balancing mandrels as shown in the Figure 2 and follow the
steps in the procedure described below:
Figure 2 Balancing Mandrels
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