NCO.IDE.H.125 Operations under IFR — flight and navigational instruments and associated equipment

Helicopters operated under IFR shall be equipped with:

(a) a means of measuring and displaying the following:

(1)  magnetic heading;

(2)  time in hours, minutes and seconds;

(3)  barometric altitude;

(4)  indicated airspeed;

(5)  vertical speed;

(6)  slip;

(7)  attitude;

(8)  stabilised heading; and

(9)  outside air temperature;

(b) a means of indicating when the supply of power to the gyroscopic instruments is not adequate;

(c) a means of preventing malfunction of the airspeed indicating system required by (a)(4) due to condensation or icing; and

(d) an additional means of measuring and displaying attitude as a standby instrument.