51-60-00
Structures
AMM
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Calculation. M = P * r Where M is the residual moment, r (cm or inches) is the distance between the hinge lineand the point where the force P (kg or lb) acts.
Notes. Positive moments are tail heavy, negative moments are nose heavy.Rudder -weight and residual moment include lower hinge and trim plate.Elevator -weight and residual moment include trim tab, horn, and trim tab control rods.Aileron -weight and residual moment include horn, trim plate and hinges.Wing flaps -Weight and residual moment include horn and hinges.
% % Figure 1: Weights and Residual Moments Report, Standard Tanks Installed
51-60-00
Structures
% % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % Figure 2: Weights and Residual Moments Report, Long Range Tanks Installed (O.M 40-071)
Calculation. M = P * r Where M is the residual moment, r (cm or inches) is the distance between the hinge lineand the point where the force P (kg or lb) acts.
Notes. Positive moments are tail heavy, negative moments are nose heavy.Rudder -weight and residual moment include lower hinge and trim plate.Elevator -weight and residual moment include trim tab, horn, and trim tab control rods.Aileron -weight and residual moment include horn, trim plate and hinges.Wing flaps -Weight and residual moment include horn and hinges.
51-60-00
Structures
AMM
% Refer to Figure 1 (Standard Tanks) or Figure 2 (Long Range Tanks) for the weight and residual
moment.
Use any suitable method to support the rudder horizontally at the pivot axis.
The rudder must be able to rotate freely around the pivot axis.
Remove the stop bolts from the lower mounting bracket before weighing and balancing.
The residual moment is tail heavy.
Spring Balance
Horizontal
Lower Mounting Bracket
Figure 3: Rudder Static Balance
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Structures
% Refer to Figure 1 (Standard Tanks) or Figure 2 (Long Range Tanks) for the weight and residual
moment.
Use any suitable method to support the elevator horizontally at the pivot axis.
The elevator must be able to rotate freely around the pivot axis.
The balance includes the trim tab, trim tab control rod and horn.
Balance Weight Balance Weight
Figure 4: Elevator Static Balance
51-60-00
Structures
AMM
% Refer to Figure 1 (Standard Tanks) or Figure 2 (Long Range Tanks) for the weight and residual
moment.
Use any suitable method to support the trim tab horizontally at the pivot axis.
The trim tab must be able to rotate freely around the pivot axis.
The residual moment is tail heavy.
Horizontal
Figure 5: Trim Tab Static Balance
51-60-00
Structures
% Refer to Figure 1 (Standard Tanks) or Figure 2 (Long Range Tanks) for the weight and residual
moment.
Use any suitable method to support the aileron horizontally at the pivot axis.
The aileron must be able to rotate freely around the pivot axis.
The balance includes the horn, trim plate and hinges.
Mass Balance Weight
Figure 6: Aileron Static Balance
51-60-00
Structures
AMM
% Refer to Figure 1 (Standard Tanks) or Figure 2 (Long Range Tanks) for the weight and residual
moment.
Use any suitable method to support the wing flap horizontally at the pivot axis.
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