The operator shall not operate a helicopter in accordance with VFR, unless such helicopter is equipped with-
(a) a magnetic compass;
(b) an accurate time-piece on board indicating the time in hours, minutes and seconds;
(c) a sensitive pressure altimeter with a subscale setting, calibrated in hectopascals, adjustable for any barometric pressure setting likely to be encountered during flight;
(d) an airspeed indicator;
(e) a vertical speed indicator and an attitude indicator if operated at night;
(f) a stabilised direction indicator if operated at night; and
(g) a means of indicating on the flight deck the outside air temperature in degrees Celsius:
Provided that a helicopter with a maximum certificated mass of 2 730 kilograms or less, does not have to comply with the provisions of paragraphs (e) and (f).