Good heads up. An underestimated threat in these days of excellent tyres. If my memory is correct from lessons in the 70 s, the max aquaplane speed is 9 x the square route of the tyre pressure (psi)
the cross ply tyres on a 747 are about 225 psi so aquaplane speed 135kts.
on my touran, 36 psi so 50 mph but not sure if that applies to Michelin primacy 4s