The following sections in the CFS2 - FSX .air-files enable an aircraft to spin

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451 Cl_beta (alpha) Dihedal Effect vs BodyAoA

456 Cl_p(alpha) Roll Damping Coeff vs Body AoA

460 Cn_beta(alpha) Weathervane Stability Coeff vs Body AoA

464 Cn_r(alpha) Yaw Damping Coeff vs Body AoA

473 Cm_alpha Pitch Moment Coeff vs Body AoA (rad)