Sec. 25.397 - Control system loads.
(a) (b) (c) ------------------------------------------------------------------------ Maximum forces or Minimum forces or Control torques torques ------------------------------------------------------------------------ Aileron: Stick.......................... 100 lbs........... 40 lbs. Wheel \1\...................... 80 D in.-lbs \2\.. 40 D in.-lbs. Elevator: Stick.......................... 250 lbs........... 100 lbs. Wheel (symmetrical)............ 300 lbs........... 100 lbs. Wheel (unsymmetrical) \3\...... .................. 100 lbs. Rudder........................... 300 lbs........... 130 lbs. ------------------------------------------------------------------------ \1\ The critical parts of the aileron control system must be designed for a single tangential force with a limit value equal to 1.25 times the couple force determined from these criteria. \2\ D=wheel diameter (inches). \3\ The unsymmetrical forces must be applied at one of the normal handgrip points on the periphery of the control wheel. [Doc. 5066, 29 FR 18291, Dec. 24, 1964, as
amended by Amdt. 25-38, 41 FR 55466, Dec. 20, 1976; Amdt. 25-72, 55 FR
29776, July 20, 1990] |