Out-of-trim characteristics.

CFR · 2024-01-01 · US · Title 14

(a) From an initial condition with the airplane trimmed at cruise speeds up to V (1) A three-second movement of the longitudinal trim system at its normal rate for the particular flight condition with no aerodynamic load (or an equivalent degree of trim for airplanes that do not have a power-operated trim system), except as limited by stops in the trim system, including those required by § 25.655(b) for adjustable stabilizers; or (2) The maximum mistrim that can be sustained by the autopilot while maintaining level flight in the high speed cruising condition. (b) In the out-of-trim condition specified in paragraph (a) of this section, when the normal acceleration is varied from + 1 g to the positive and negative values specified in paragraph (c) of this section— (1) The stick force vs. g curve must have a positive slope at any speed up to and including V (2) At speeds between V (c) Except as provided in paragraphs (d) and (e) of this section, compliance with the provisions of paragraph (a) of this section must be demonstrated in flight over the acceleration range— (1) −1 g to + 2.5 g; or (2) 0 g to 2.0 g, and extrapolating by an acceptable method to −1 g and + 2.5 g. (d) If the procedure set forth in paragraph (c)(2) of this section is used to demonstrate compliance and marginal conditions exist during flight test with (e) During flight tests required by paragraph (a) of this section, the limit maneuvering load factors prescribed in §§ 25.333(b) and 25.337, and the maneuverin

official document · source cfr-2024 · id 14:§ 25.255