{"data":{"id":"us/14-cfr-25.405","jurisdiction":"us","citation":"14 CFR 25.405","heading":"Secondary control system.","body":"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:\nPilot Control Force Limits (Secondary Controls)\nControl Limit pilot forces\nMiscellaneous:\n*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).\nTwist 133 in.-lbs.\nPush-pull To be chosen by applicant.\n*Limited to flap, tab, stabilizer, spoiler, and landing gear operation controls.","path":["Title 14—Aeronautics and Space","CHAPTER I—FEDERAL AVIATION ADMINISTRATION, DEPARTMENT OF TRANSPORTATION","SUBCHAPTER C—AIRCRAFT","PART 25—AIRWORTHINESS STANDARDS: TRANSPORT CATEGORY AIRPLANES","Subpart C—Structure"],"source_url":"https://www.ecfr.gov/api/versioner/v1/full/2026-08-25/title-14.xml","current_through":"2026-08-25","vintage":"","retrieved_at":"2026-08-27T02:24:20Z","sha256":"0eff407d060886229d2417e6430335dfdc76797568ca992bc1a292d64c01a414","source_id":"us-cfr","stale":true,"prev":"us/14-cfr-25.399","next":"us/14-cfr-25.407"},"notice":"GroundRules: Original legal text. Not legal advice."}