a mandatory requirement for the floats to be armed when overwater below 400ft and recommended maximum inflation speed of 80kts in an emergency. Your B4 emergency procedures are on 9-17-3, to help you check. (Most of us with experience would recommend ignoring the instruction on 9-17-4 to apply the rotor brake after touch down, however!)
On the B4 there is an SB for the screws being too long in the belly panel. Interferes with the harness of the floats and can fire them in the cruise. Definitely a bodice ripper and can bring a tear to a glass eye!! The MR blades on the unfortunate specimen touched the tail boom as it stood on its face!