Document ID: chunk:federal_register_of_legislation:F2020C00611:front:0:p22
Version: federal_register_of_legislation:F2020C00611
Segment Type: other
Provision Reference: 
Character Range: 55199–57041

airspeed indicating system with means of preventing malfunctioning due to either condensation or icing; and
(b) 2 sensitive pressure altimeters; and
           (c)  (i) a direct reading magnetic compass; or
 (ii) a remote indicating compass and a standby direct reading magnetic compass; and
(d) an accurate timepiece indicating the time in hours, minutes and seconds; and
(e) a rate of climb and descent indicator (vertical speed indicator); and
(f) an outside air temperature indicator; and
(g) 2 attitude indicators (artificial horizons); and
(h) a heading indicator (directional gyroscope or equivalent approved by CASA); and
(i) a turn and slip indicator except that only a slip indicator is required when a third attitude indicator usable through flight attitudes of 360 degrees of pitch and roll is installed in accordance with paragraph (k) of this Appendix; and
(j) a means of indicating whether the power supply to those instruments requiring power is working satisfactorily; and
(k) in turbo-jet aeroplanes having a maximum take-off weight greater than 5 700 kg and in turbo-prop aeroplanes having a maximum take‑off weight greater than 18 000 kg a third attitude indicator which:
 (i) is powered from a source independent of the electrical generating system; and
 (ii) continues to provide reliable indications for a minimum of 30 minutes after total failure of the electrical generating system; and
 (iii) is operative without selection after total failure of the electrical generating system; and
 (iv) is located on the instrument panel in a position which will make it plainly visible to, and usable by, any pilot at his station; and
 (v) is appropriately lighted during all phases of operation; and
(l) in turbo-jet aeroplanes with operating limitations expressed in terms of Mach number, a Mach number indicator (Machmeter).