Question

i need to study all subject

Answer 1

Answer:

then you are supposed to study

Answer 2

Explanation:

The illusions and inherent risks of night visual approaches can be made even worse in reduced visibility due to low cloud, mist or precipitation. The basic risk in poor visibility is that objects will appear to be further away than they actually are. Even in conditions of near perfect visibility, there are still risks. The bright lights surrounding a “city” airport could easily mask the obstruction warning lights on any mast or tower in the vicinity. Vigilance during night approaches, irrespective of the conditions, is therefore critical.

On a clear night, lights can be seen from a long distance and it is quite difficult to judge distance without the use of specific landmarks or reliance on electronic aids. Commencing descent for a straight in approach based solely on the runway lights might therefore occur prematurely and result in descent below a safe altitude thereby increasing the risk of a CFIT accident.