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Sec. 25.405 - Secondary control system.
Secondary controls, such as wheel brake, spoiler, and tab controls, must be designed for the maximum forces that a pilot is likely to apply to those controls. The following values may be used: Pilot Control Force Limits (Secondary Controls)
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Control Limit pilot forces
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1 1 Miscellaneous: 1+R
*Crank, wheel, or [lpar5]___[rpar5] x 50 lbs.,
but
lever. 3
not less than 50 lbs. nor
more than 150 lbs.
(R=radius). (Applicable to
any angle within 20°
of plane of control).
Twist..................................... 133 in.-lbs.
Push-pull................................. To be chosen by applicant.
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*Limited to flap, tab, stabilizer, spoiler, and landing gear operation
controls.
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