Radial tire for airplane

A radial tire for airplane comprising a pair of bead cores, a radial carcass comprised of at least one carcass ply toroidally extending between the pair of bead cores, and a belt disposed on an outer periphery of a crown portion of the radial carcass and comprised of plural belt layers each containing organic fiber cords, in which a total strength in a circumferential direction over a full width of the belt Tbelt in N satisfies Tbelt/WD≧1.5×106 when an outer diameter of the tire is D in m and a width of the tire is W in m, and at least one layer of the belt layers is constituted with an organic fiber cord spirally winding at an angle of approximately 0° with respect to an equatorial plane of the tire and satisfying the following equations I and II:

• σ≦−0.01E+1.2 equation I
• σ≧0.02 equation II
• wherein σ is a heat shrinkage stress at 177° C. in cN/dtex and E is an elastic modulus at 25° C. under a load of 49 N in cN/dtex.