CPL Human Factors · Mock exam

A pilot flying in rain at night sees lights ahead that appear to be runway lights, but subsequently realises they are farmhouse lights at ground level. This misperception is best explained by:

• A.a magnetic anomaly causing the compass to point toward the farmhouse instead of the runway
• B.reduced contrast and acuity in rain limit judgement of the angular relationship between lights and the horizon
• C.radar altimeter failure — the instrument should distinguish ground level from runway elevation
• D.colour blindness causing farmhouse lights to appear as aviation-specification colours