The time required for complete adaptation is
The requirement of good sunglasses is to
Why does a deficiency in vitamin A cause night-blindness?
Scanning at night should be performed by:
Approaches at night without visual references on the ground and no landing aids (e.g. VASIS) can make the pilot believe of beeing
A pilot is used to land on wide runways only. When approaching a smaller and/or narrower runway, the pilot may feel he is at a
Flickering light when reflected from spinning rotor blades
A pilot approaching a runway which is narrower than normal may feel he is at a greater height than he actually is. To compensate he may fly a