In complying with any of the provisions in this Subpart, all factors that significantly affect the performance of the helicopter, as applicable to the phase of flight, shall be taken into account and which shall include as a minimum-
(a) the mass of the helicopter;
(b) the operating procedures employed by the operator;
(c) the pressure-altitude appropriate to the elevation of the aerodrome;
(d) the ambient temperature;
(e) the wind; and
(f) the condition of the surface.