Confused Over Meaning/Location of Air Spaces on Map

As I was going through the user guide, it mentioned class B, C, D, etc. but I have no clue what is their significance or how to identify where radar/tower control is whenever I’m flying into a weird location like San Francisco (lines all jumbled around). I already understand the vertical jurisdictions and lateral boundaries (e.g. Departure/Approach SFC - FL180, 50nm), but how do these rules correspond to the weird lines on major airports?

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This is some excellent information about the National Airspace System (NAS) in the United States. Take a look:

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Those are just airspace lines corresponding with real life, they aren’t enforced, you usually just need to know about the surface levels of each airspace which it seems you know.

For the Airport Classes, it’s pretty simple to understand :)


Class Bravo: Large airports which can accept any type of aircraft. (KSFO, KLAX, EGLL)

Class Charlie: Smaller airports which usually take commercial traffic. Max aircraft for example would be an A321/739. (KBUR, KMDW, KLGA)

Class Delta: Smallest of the airports which could be commercial. Usually take maximum E190. (EGLC, CYBW)

There’s also Class Echo which are small strips that have G/A

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This is a good video, but as aforementioned, this is not enforced in IF.

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So for VFR, I assume that I’m flying below FL180 at all times?

Yep, that’s correct.

PM me with any other questions, I’d be happy to answer!

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This is the shape of the airspace.

Before we had realistic airspace depictions, all airspaces in IF were round circles.

They aren’t like that in real life. The weird shapes you see are the blocks/shapes that they’re actually made up of in real life.