14 C.F.R. § 25.237 Wind velocities.
Title 14 - Aeronautics and Space
(a) For landplanes and amphibians, a 90-degree cross component of wind velocity, demonstrated to be safe for takeoff and landing, must be established for dry runways and must be at least 20 knots or 0.2 V (b) For seaplanes and amphibians, the following applies: (1) A 90-degree cross component of wind velocity, up to which takeoff and landing is safe under all water conditions that may reasonably be expected in normal operation, must be established and must be at least 20 knots or 0.2 V (2) A wind velocity, for which taxiing is safe in any direction under all water conditions that may reasonably be expected in normal operation, must be established and must be at least 20 knots or 0.2 V [Amdt. 25–42, 43 FR 2322, Jan. 16, 1978, as amended by Amdt. 25–108, 67 FR 70827, Nov. 26, 2002]
Title 14: Aeronautics and Space
PART 25—AIRWORTHINESS STANDARDS: TRANSPORT CATEGORY AIRPLANES
Subpart B—Flight
Ground and Water Handling Characteristics
§ 25.237 Wind velocities.
