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Code of Federal Regulations (Last Updated: July 5, 2024) |
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Title 14 - Aeronautics and Space |
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Chapter I - Federal Aviation Administration, Department of Transportation |
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SubChapter C - Aircraft |
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Part 25 - Airworthiness Standards: Transport Category Airplanes |
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Subpart C - Structure |
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Control Surface and System Loads |
§ 25.405 - Secondary control system.
Latest version.
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§ 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)
Control Limit pilot forces Miscellaneous: *Crank, wheel, or lever ((1 + R) / 3) × 50 lbs., but 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.