AWO.A.EFVS.106 CS AWO.A.EFVS.106 Enhanced flight vision system (EFVS) display controls

- (a) A means of controlling the EFVS display contrast/brightness shall be provided that prevents: - (1) distraction of the pilot; - (2) impairment of the pilot's ability to detect and identify visual references; - (3) masking of flight hazards; and - (4) degradation of task performance or safety. - (b) If an automatic control means for image brightness is not provided, it shall be shown that the manual setting of image brightness meets the above criteria and does not cause excessive pilot workload. - (c) The EFVS display controls shall be visible to, and within reach of, the pilot flying from any normal seated position and shall provide a readily accessible control to permit the pilot flying to immediately deactivate or reactivate the display of the EFVS image on a HUD (or equivalent

display) without requiring the pilot to remove their hands from the primary flight controls and thrust control.

- (d) The position and movement of the EFVS controls shall be designed to minimise the likelihood of inadvertent operation. - (e) With the exception of controls located on the pi lot's control wheel (or equivalent), EFVS controls shall be adequately illuminated for all normal background lighting conditions, and shall not create any objectionable reflections on the HUD (or equivalent display) or other flight instruments.

[Issue: CS-AWO/2]