Level landing conditions.

CFR · 2024-01-01 · US · Title 14

(a) In the level attitude, the airplane is assumed to contact the ground at forward velocity components, ranging from V (1) V (2) V (3) The effects of increased contact speed must be investigated if approval of downwind landings exceeding 10 knots is requested. (b) For the level landing attitude for airplanes with tail wheels, the conditions specified in this section must be investigated with the airplane horizontal reference line horizontal in accordance with Figure 2 of Appendix A of this part. (c) For the level landing attitude for airplanes with nose wheels, shown in Figure 2 of Appendix A of this part, the conditions specified in this section must be investigated assuming the following attitudes: (1) An attitude in which the main wheels are assumed to contact the ground with the nose wheel just clear of the ground; and (2) If reasonably attainable at the specified descent and forward velocities, an attitude in which the nose and main wheels are assumed to contact the ground simultaneously. (d) In addition to the loading conditions prescribed in paragraph (a) of this section, but with maximum vertical ground reactions calculated from paragraph (a), the following apply: (1) The landing gear and directly affected attaching structure must be designed for the maximum vertical ground reaction combined with an aft acting drag component of not less than 25% of this maximum vertical ground reaction. (2) The most severe combination of loads that are likely to arise during a latera

official document · source cfr-2024 · id 14:§ 25.479