StacksVerified U.S. regulatory reference

14 CFR §27.151

Verified against eCFR.gov as of June 20, 2026View official text on eCFR.gov ↗
  1. (a)Longitudinal, lateral, directional, and collective controls may not exhibit excessive breakout force, friction, or preload.
  2. (b)Control system forces and free play may not inhibit a smooth, direct rotorcraft response to control system input.