14 CFR § 25.119 - Landing climb: All-engines-operating.
In the landing configuration, the steady gradient of climb may not be less than 3.2 percent, with the engines at the power or thrust that is available 8 seconds after initiation of movement of the power or thrust controls from the minimum flight idle to the go-around power or thrust setting -
(a) In non-icing conditions, with a climb speed of VREF determined in accordance with § 25.125(b)(2)(i); and
(b) In icing conditions with the most critical of the landing ice accretion(s) defined in Appendices C and O of this part, as applicable, in accordance with § 25.21(g), and with a climb speed of VREF determined in accordance with § 25.125(b)(2)(ii).
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