Not sure of the FAR wording but this is what EASA say:
CS 25.119 Landing climb: all-enginesoperating
In the landing configuration, the steady gradient of
climb may not be less than 3·2%, 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 goaround
power or thrust setting (see AMC 25.119);
and
(a) In non-icing conditions, with a climb
speed of VREF determined in accordance with CS
25.125(b)(2)(i); and
(b) In icing conditions with the “Landing Ice”
accretion defined in Appendix C, and with a climb
speed of VREF determined in accordance with CS
25.125(b)(2)(ii).