StacksVerified U.S. regulatory reference

14 CFR §29.161

Verified against eCFR.gov as of June 20, 2026View official text on eCFR.gov ↗
The trim control—
  1. (a)Must trim any steady longitudinal, lateral, and collective control forces to zero in level flight at any appropriate speed; and
  2. (b)May not introduce any undesirable discontinuities in control force gradients.