The plane is flying in the sky, and it is full of clouds when looking down. Won't pilots get lost?

You said there was a way to look down from the sky, called landmark navigation. It is the most basic and reliable navigation method in flight navigation.

Its principle is to observe the ground target with naked eyes and determine the course by comparing the chart.

second

The plane carries navigation instruments such as magnetic compass, electric compass, radio navigation, TACAN and even GPS, and keeps close contact with air traffic control system and ground remote control navigation station. So even if you can't find a landmark, you can fly completely by instrument. This is called instrument flight in flight and is a compulsory course for pilots.

In addition, the height of the air passage of commercial aviation is generally very high, mostly above 6000 meters. At this time, it is difficult for the naked eye to observe the ground target. Almost all of them rely on terrestrial radio navigation.

The airspace of private light aircraft is below 600 meters, so it is very important to observe ground targets.