Document ID: chunk:federal_register_of_legislation:F2020C00611:reg:2:p5
Version: federal_register_of_legislation:F2020C00611
Segment Type: reg
Provision Reference: reg 2 (pt 5/15)
Character Range: 67587–70402

accurate timepiece indicating the time in hours, minutes and seconds; and
(e) 2 instantaneous vertical speed indicators; and
(f) an outside air temperature indicator; and
(g) 2 attitude indicators (artificial horizons) having a 5 inch dial presentation and a standby attitude indicator positioned so as to be usable by the pilot in command and plainly visible by both pilots by day and by night; and
(h) a heading indicator (directional gyroscope); and
(i) 2 slip indicators; and
(j) provision to indicate whether the power supply to the gyroscopic instruments is working satisfactorily.
      2 The minimum flight and navigation instruments required in a helicopter which is operated by a single pilot are:
(a) an airspeed indicating system with means of preventing malfunction 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) instantaneous vertical speed indicator; and
(f) an outside air temperature indicator; and
(g) an attitude indicator having a 5 inch dial presentation and a standby attitude indicator positioned so as to be usable by the pilot; and
(h) a heading indicator (directional gyroscope); and
(i) a slip indicator; and
(j) provision to indicate whether the power supply to the gyroscopic instruments is working satisfactorily.
      3 The instruments specified in paragraphs 1 (a), (b) and (e) and 2 (a), (b) and (e) of this Appendix must be capable of being connected to more than 1 static source or must be connected to a balanced pair of flush static ports. Instruments and equipment other than mandatory flight instruments must not be connected to the static system that operates the instruments used by the pilot in command.
      4 The instruments specified in paragraphs 1 (h) and 2 (h) must have a duplicated source of power supply.
      5 The 5 inch dial attitude indicators specified in paragraphs 1 (g) and 2 (g) must have duplicate sources of power supply. The standby attitude indicator must have a power source independent of the electrical generating system and must operate independent of any other attitude indicating system installed.
      6 The standby attitude indicator installation specified in paragraphs 1 (g) and 2 (g) must be one in which:
(a) the indicator complies with US Technical Standard Order C4c or equivalent specification acceptable to CASA; and
(b) the indicator and its lighting will continue to operate for 30 minutes following the failure of the electrical power generating system without any action by the flight crew; and
(c) the position size and lighting of the instrument display allows its use from