Singapore legislation
Regulation 76
of Air Navigation (91 — General Operating Rules) Regulations 2018
Regulation 76
Aircraft operating under IFR or at night
Subregulation 1
An operator of a Singapore registered aircraft to be flown in accordance with the Instrument Flight Rules, or when the surface is not in sight, must ensure that the aircraft is equipped with a means of measuring and displaying —
magnetic heading (such as a standby compass); (b)barometric altitude; (c)indicated airspeed, with a means of preventing malfunctioning due to condensation or icing; (d)mach number, if the speed limitation specified in the aircraft’s flight manual is expressed in terms of mach number;
stabilised aircraft heading;
the adequacy of the power supply to any gyroscopic instrument; (g)the outside air temperature;
the rate of climb and descent;
turn and slip if the aircraft is an aeroplane, or slip if the aircraft is a helicopter;
aircraft attitude for each required pilot, except that in an aeroplane one such indicator may be replaced with a turn and slip indicator; and
an additional indicator of aircraft attitude, if the aircraft is a helicopter; and
the time in hours, minutes and seconds.
Subregulation 2
When an aircraft mentioned in paragraph (1) is to be flown at night, the operator must ensure that the aircraft is equipped with the following lights: (a)any light required by the Rules of the Air;
illumination for all flight instruments and equipment essential for the safe operation of the aircraft;
lights in all passenger compartments;
an independent portable light for each crew member station;
a landing light which, if the aircraft is a helicopter, must be trainable in the vertical plane.
Subregulation 3
In paragraph (1) and regulation 77, “the surface is not in sight” means —
the flight crew is not able to see sufficient features of the surface; or (b)the surface illumination is insufficient to enable the flight crew to maintain the aircraft in a desired attitude without reference to any flight instrument.