StacksVerified U.S. regulatory reference

14 CFR §25.497

Verified against eCFR.gov as of June 20, 2026View official text on eCFR.gov ↗
  1. (a)A vertical ground reaction equal to the static load on the tail wheel, in combination with a side component of equal magnitude, is assumed.
  2. (b)If there is a swivel, the tail wheel is assumed to be swiveled 90° to the airplane longitudinal axis with the resultant load passing through the axle.
  3. (c)If there is a lock, steering device, or shimmy damper the tail wheel is also assumed to be in the trailing position with the side load acting at the ground contact point.