(a)a competent person designated to be in control of helideck operations on the manned offshore installation is present on the installation at the time of helideck operations;(b)such person carries out appropriate duties before any helicopter lands on the offshore installation or takes off from it;(c)such procedures are established and equipment provided, as will secure that landing and take off of helicopters are without risk to safety of the personnel and installation; and(d)helicopter is safely parked on the installation.
