Originally Posted by
tdracer
I no longer have access to the various FCOMs, but I believe that is common to all Boeing models
I've flown different Boeings with different airlines, and the FCOM has always stated: "By 60 knots, start movement of the reverse thrust levers to be at the reverse idle detent before taxi speed".
Airbus (at least on the 320 series) says 70 knots to select idle.